Two Narratives of Global Inequality: A Dialogue Between Economics and Law

Global inequality is one of the most pressing issues of our time, yet different disciplines offer vastly different diagnoses of its root causes. In 2020, as part of the "Dialogue with Masters" series at Zhejiang University International Business School (ZIBS), I conducted in-depth interviews with Professor Branko Milanovic of the City University of New York and Professor Katharina Pistor of Columbia Law School -- two of the most influential scholars in inequality research today. Milanovic approaches the subject from macroeconomic data, dividing global capitalism into two systems: "liberal meritocratic capitalism" and "political capitalism." Pistor, by contrast, examines the micro-level mechanisms of law, revealing how law serves as the "code" of capital, transforming ordinary assets into engines of wealth generation. These two conversations, separated by less than two weeks, opened an entirely new analytical dimension for me: global inequality is not merely an economic phenomenon but a product of institutional design -- and understanding this requires a genuine dialogue between economics and law.

I. Two Starting Points: Data and Institutions

To understand global inequality, one must first clarify a fundamental methodological divide: economists and legal scholars observe the same phenomenon, but their analytical tools and focal points are entirely different.

Branko Milanovic is one of the founding figures of contemporary global inequality research. Having worked at the World Bank's research department for over twenty years, he constructed the most comprehensive global income distribution database to date. In our conversation, he repeatedly emphasized a core point: to understand inequality, one must first have reliable data. His research methodology is classic empirical economics -- collecting household survey data from various countries, comparing them across nations using purchasing power parity (PPP), and drawing the famous "elephant curve," which reveals the distribution pattern of global income growth between 1988 and 2008. The curve shows that the greatest beneficiaries of globalization were the middle classes of emerging Asian nations and the wealthiest top one percent globally, while the lower-middle classes of Western countries saw their incomes virtually stagnate.^[1]

Katharina Pistor's starting point is entirely different. As a comparative legal scholar, she does not examine income data but rather legal texts and judicial practices. In our conversation, she put forward a profoundly subversive proposition: capital is not a "thing" but a legal effect. She pointed out that land is merely soil, stocks are merely paper, and intellectual property is merely ideas -- it is the law that endows these things with "priority," "durability," "universality," and "convertibility," transforming them into "capital" capable of generating wealth.^[2]

The difference between these two perspectives can be understood through a simple analogy: Milanovic sees the shape and size of an iceberg above the waterline -- the outcomes of global income distribution; Pistor sees the ocean currents beneath the surface -- how legal institutions shape those outcomes. Both are real, but they answer different questions: Milanovic asks, "What is the current state of inequality?" Pistor asks, "How is inequality produced?"

As a scholar who trained in law and later turned to business and policy research, I deeply feel that this interdisciplinary tension is precisely the bottleneck that inequality research most needs to break through. Economists excel at quantifying the scale of the problem; legal scholars excel at dissecting its mechanisms -- but genuine solutions require the integration of both.

II. Milanovic's Diagnosis: The Competition Between Two Capitalisms

In my conversation with Professor Milanovic, his most original contribution was proposing a new global analytical framework: the world today is no longer defined by the confrontation of "capitalism vs. socialism," but rather by a competition between two forms of capitalism -- liberal meritocratic capitalism and political capitalism.^[3]

Liberal meritocratic capitalism, represented by the United States, theoretically promises that under a framework of free markets and the rule of law, each person's income and social status are determined by their abilities and efforts. But Milanovic pointed out that this promise is being systematically eroded. In our conversation, he identified three key mechanisms:

First, the concentration of capital income. Over the past four decades, the wealthiest top ten percent in the United States have not only earned the highest labor incomes but also hold the largest share of capital income (dividends, interest, capital gains). When the same group simultaneously occupies the top of both labor and capital income, inequality becomes self-reinforcing and continually widens.

Second, the reinforcing effect of homogamy. High earners tend to marry other high earners -- lawyers marry investment bankers, physicians marry tech executives. This trend further amplifies income disparities at the household level. Data cited by Milanovic shows that among the top five percent of American households, the proportion of dual-income families rose from less than forty percent in the 1970s to nearly eighty percent today.

Third, the monetization of political influence. The concentration of wealth is not merely an economic phenomenon; it also translates into political power. The wealthy influence tax policy, labor regulations, and education policy through political donations, lobbying groups, and think tank funding, thereby consolidating their economic advantages. Milanovic calls this phenomenon "homoploutia" -- the rich ensure the intergenerational transmission of their interests through institutional design.

Political capitalism, represented by China, receives from Milanovic an analysis that is neither wholly laudatory nor wholly critical, but rather a sober structural observation. He noted that the core feature of political capitalism is that the state bureaucracy possesses a high degree of autonomy, enabling it to formulate and execute long-term economic policies, but this efficiency comes at the cost of uncertainty in the rule of law. In other words, the advantage of political capitalism lies in the speed of decision-making and execution -- the ability to rapidly mobilize resources, advance infrastructure, and implement industrial policies; its weakness lies in the absence of an independent legal system as a check, making corruption difficult to eradicate.

During our conversation, I specifically pressed on whether these two systems inevitably tend toward confrontation. Milanovic's answer was quite measured -- he believed the relationship between them is more one of "competitive coexistence," with each system attempting to learn certain strengths from the other while resisting its influence. This analytical framework has had a profound impact on my subsequent policy research, particularly when analyzing cross-national differences in fintech regulation.^[4]

III. Pistor's Legal Framework: The "Coding" Mechanism of Capital

If Milanovic sees the "outcomes" of inequality in economic data, then Pistor reveals the "process" of inequality through legal mechanisms. In our conversation, she systematically elaborated on how the law "codes" ordinary assets into capital through four "modules."

The first module is priority. The law determines whose rights take precedence when multiple parties make claims on the same asset. Pistor used the "collateralized debt obligations" (CDOs) of the 2008 financial crisis as an example: when the wave of mortgage defaults arrived, investors holding "senior tranches" were able to receive repayment before other creditors -- and this prioritization was entirely a product of legal arrangement. Financial institutions that command legal knowledge and resources can design the most favorable priority positions for themselves, while ordinary investors are pushed into the riskiest tiers.^[5]

The second module is durability. The law can make rights over assets persist across time. The most classic example is the trust system: through trusts, wealthy families can transfer property into legal entities, evading estate taxes, debt claims, and even divorce settlements. In our conversation, Pistor mentioned a striking fact: South Dakota has become one of the world's largest trust havens, allowing the establishment of "perpetual trusts" that enable wealth to circulate within families indefinitely -- a modern reincarnation of the medieval entail system.

The third module is universality. Rights conferred by law bind not only the parties involved but can also be enforced against third parties and indeed the entire world. Intellectual property is the most vivid example: a patent not only prohibits competitors from copying an invention but can prevent others worldwide from independently developing the same technology -- even if the latter had no knowledge of the former's existence. Pistor pointed out that this expansion of "rights in rem" enables intellectual property holders to establish global monopolies, and this monopoly status is entirely constructed by law.

The fourth module is convertibility. The law ensures that assets can be converted into cash in times of crisis. During the 2008 financial crisis, the reason the Federal Reserve implemented emergency bailouts for large financial institutions was precisely because these institutions' assets were recognized by the legal system as "systemically important assets" -- they were "too big to fail." Pistor calls this mechanism "the ultimate backstop of capital": when the wealth created by the other modules faces collapse, the state steps in as the guarantor of last resort, ensuring that these legally constructed assets do not go to zero.

The combination of these four modules constitutes what Pistor calls "the code of capital" -- a systematic legal technology for transforming ordinary assets into wealth-generating instruments. And those who master this technology -- primarily elite law firms in the United States and the United Kingdom -- become the invisible architects of global wealth distribution. In our conversation, Pistor particularly emphasized: "Lawyers are not bystanders of capitalism; they are co-creators of capital."

As a doctor of law, this analysis struck me as both revelatory and deeply familiar. During my doctoral studies in law at Nagoya University, my research involved the legal architecture of financial regulation, but it was not until my conversation with Professor Pistor that I truly realized: law is not merely an external framework constraining market behavior; it is the internal structure constituting the market itself.^[6]

IV. Convergence and Divergence: A Dialogue Between Two Narratives

After completing my conversations with Milanovic and Pistor separately, I spent considerable time reflecting on the relationship between these two narratives. They are highly consistent on certain core judgments but exhibit significant divergences in their analytical paths and policy prescriptions.

Convergence one: both regard inequality as a product of institutions, not of nature. Milanovic explicitly rejects the myth of the "trickle-down effect" -- economic growth does not automatically benefit everyone; the outcome of distribution depends on institutional design. Pistor argues the same proposition at an even more fundamental level: wealth itself is a creation of law, and therefore the distribution of wealth necessarily reflects the power structures within the legal system. This consensus carries profound policy implications -- it means that inequality is not an exception of "market failure" but the norm of "institutional design."

Convergence two: both express deep concern about the sustainability of the current global order. Milanovic worries that liberal meritocratic capitalism is degenerating into "plutocracy," where a political system captured by wealth loses its capacity for self-correction. Pistor worries about the "privatization" of the legal system -- when elite law firms can tailor-make legal rules for clients, bypassing the democratic legislative process, the rule of law transforms from a public good into a private instrument.

Divergence one: different levels of explanation. Milanovic's analysis focuses on macro-level political-economic structures -- how "mega-trends" such as globalization, technological change, and education policy shape income distribution. Pistor's analysis delves into the micro-level legal techniques -- how the terms of a contract, the structure of a trust, or the scope of a patent create inequality at the case level. This difference in levels means that the causal chains they identify are different: Milanovic would say "globalization caused income stagnation"; Pistor would say "globalization produced specific income effects because intellectual property law, corporate law, and financial law were coded in particular ways."

Divergence two: different policy prescriptions. Milanovic's prescriptions lean toward traditional redistributive tools -- raising inheritance taxes, expanding public education investment, and limiting political donations. These measures operate within the existing institutional framework, aiming to correct the outcomes of distribution. Pistor's prescriptions are more radical -- she argues that the legal system itself needs to be re-examined, asking: who has the right to decide how the law "codes" capital? Whose interests should the law serve? She proposes establishing a "public option," where the government provides basic legal architecture (such as standardized contracts, public digital currencies) to counterbalance the monopoly that private lawyers hold over the legal system.

Divergence three: different assessments of China. Milanovic takes a cautiously open stance toward China's "political capitalism" model, regarding it as an alternative worth serious study. Pistor is more wary -- she worries that China's rapid financialization is replicating the most problematic "coding" techniques of Western legal systems, particularly in shadow banking and digital finance. In her view, China does not face a choice of "whether to have capitalism" but rather "how to code capital" -- and this choice will determine the trajectory of inequality in China's future.^[7]

V. Implications: Toward an Integrated Analysis of Inequality

My dialogues with Milanovic and Pistor have had a lasting and profound impact on my academic research and policy practice. As a researcher who spans law, business, and technology policy, I deeply feel that the greatest bottleneck in current inequality research lies in disciplinary silos -- economists and legal scholars each cultivate their own fields intensively, but there is a lack of genuine interdisciplinary integration.

At the analytical level, I believe future inequality research needs to combine Milanovic's macro-level data analysis with Pistor's micro-level legal analysis. Economic data alone tells us "what happened"; legal analysis alone tells us "what the mechanism is" -- but only the combination of both can tell us "why it happened" and "how to change it." For example, when we observe that the income share of the global top one percent has been steadily rising over the past four decades (Milanovic's finding), we need to simultaneously ask: what legal changes -- revisions to tax law, deregulation of financial oversight, expansion of intellectual property protections -- made this concentration possible (Pistor's inquiry)?^[8]

At the policy level, integrating both perspectives means that effective anti-inequality policies cannot rely solely on after-the-fact redistribution (Milanovic's path) but must also reform the ex-ante design of rules (Pistor's path). Take fintech as an example -- a primary area of my recent research at Cambridge University and the World Bank -- the rise of digital financial platforms is creating new forms of inequality: data monopolies, algorithmic discrimination, and the concentration of platform power. Addressing these challenges, traditional taxation and transfer payment tools alone are insufficient; we need to redesign the legal architecture of digital finance -- who owns data? How are algorithms regulated? Where are the boundaries of platform responsibility? -- these are precisely the areas where Pistorian analysis can make its greatest contribution.

At the educational level, these two dialogues reinforced my commitment to promoting interdisciplinary education at Zhejiang University. In designing MBA and executive education programs, I have consistently emphasized that business education cannot only teach "how to make money" but must also teach "how wealth is created and distributed" -- the latter requires the joint participation of economics, law, political science, and ethics. Milanovic's elephant curve should appear alongside Pistor's theory of legal coding in the same course, because only then can future business leaders understand the deeper impact of their decisions on social equity.

At the global governance level, the analyses of both scholars point to a key insight: global inequality is not merely a matter of domestic policy but also a matter of international legal architecture. When the "coding" techniques of Anglo-American legal systems are exported to developing countries through globalization (Pistor's observation), and when "political capitalism" and "liberal meritocratic capitalism" compete on the global stage (Milanovic's observation), solutions to inequality cannot be confined to any single country. This is precisely the theme I have repeatedly emphasized in my policy research at the World Bank and the United Nations: global problems require global institutional responses.

Looking back on these two dialogues, what I value most is not only the individual scholarly insights of both academics but the "stereoscopic effect" that emerges when their two narratives are placed side by side. When we view inequality from only one angle, we see a flat image; when we view it simultaneously through the lenses of economics and law, the full picture of inequality truly emerges -- it is both a factual matter of data and a legal construction; both a historical accumulation and a present-day choice. And the first step toward changing this reality is recognizing that the unequal world we live in is not the result of natural evolution but a product of human institutional design -- and what humans have designed, humans can redesign.