With his new Report on Global Justice, Thomas Piketty proposes a radical form of global fiscal engineering: a worldwide wealth tax reaching as high as 20%, marginal tax rates of 90% on very high incomes, and an international sovereign wealth fund financing social and climate-related investments. The entire framework rests on the assumption that growth in advanced economies will remain durably weak and that redistribution should therefore become the primary instrument of social justice.<\/p>\n\n\n\n
Yet this perspective overlooks the fact that globalization has enabled a dramatic reduction in absolute poverty worldwide, from roughly 40% of the global population living in extreme poverty in 1980 to around 9\u201310% today.<\/p>\n\n\n\n
Beyond questions about the feasibility of the degree of international coordination required, the architecture of Piketty\u2019s proposal also suffers from a weak growth theory, lacking solid microeconomic foundations.<\/p>\n\n\n\n
In Piketty\u2019s framework, long-term economic dynamics are largely reduced to a handful of macroeconomic parameters treated as fixed and exogenous. As Philippe Aghion has shown, however, growth is an endogenous phenomenon shaped by institutions and incentives. Capital is also treated as a homogeneous stock, without distinguishing between innovative productive capital and less productive forms of wealth, even though the transformation and reallocation of capital are central determinants of future growth.<\/p>\n\n\n\n
The Neglected Question of Innovation Financing<\/p>\n\n\n\n
This is where Joseph Schumpeter becomes essential. Schumpeter reminded us that capitalism is fundamentally a dynamic process of creative destruction. Entrepreneurs, financed through credit or venture capital, introduce innovations that disrupt established positions and push the technological frontier forward.<\/p>\n\n\n\n
The key issue, therefore, is not primarily the distribution of wealth, but rather innovation, its financing, and the incentives that encourage risk-taking. Growth cannot be treated as a mere backdrop onto which ever-higher taxation can simply be grafted. Moreover, taxes on wealth and very high incomes do not have the same effects when they target economic rents as when they affect the rewards earned by innovators. Excessively heavy taxation can significantly weaken entrepreneurial dynamism and, ultimately, the growth potential upon which social progress depends. Piketty\u2019s proposal appears to overlook these considerations.<\/p>\n\n\n\n
The proposal for a global sovereign wealth fund eventually holding assets equivalent to 60% of world GDP raises a similar concern. Such a concentration of capital allocation in political and administrative hands creates problems of legitimacy, information (identifying the most promising innovations), incentives, and resource allocation (taking risks without the disciplining mechanisms of markets).<\/p>\n\n\n\n
The danger is that established and politically influential actors would be favored, along with the least risky investments, at the expense of genuine technological breakthroughs. The tendency to overestimate the capabilities of public authorities-implicitly assumed to be omniscient-and to underestimate the role of entrepreneurship and markets is questionable, especially since, in practice, their complementarity is essential.<\/p>\n\n\n\n
Reconciling Development and Prosperity<\/p>\n\n\n\n
Likewise, the climate transition is presented primarily as a question of investment volumes rather than as a challenge of innovation. Yet its success also depends on businesses, competitive market conditions, and incentives to invest. Without this Schumpeterian dimension, calls for sustainability and restraint risk becoming a technocratic exercise rather than a genuine productive transformation.<\/p>\n\n\n\n
A system of redistribution is, of course, necessary. So too are mechanisms that limit excessive concentrations of wealth and power. But such a system must be calibrated carefully to preserve a balance between social justice and economic dynamism. It must also take account of the significant differences between regions such as Europe and the United States.<\/p>\n\n\n\n
By neglecting Schumpeter and embracing highly radical fiscal proposals, Piketty risks constructing a dangerous egalitarian utopia upon a fragile analytical foundation. The debate should not focus solely on the taxation of the wealthy; it should above all address the question of the most effective growth regime, one capable of reconciling development and prosperity, environmental sustainability, and the containment of inequality.<\/p>\n\n\n\n
Olivier Klein is Professor of Economics at HEC Paris.<\/p>\n","protected":false},"excerpt":{"rendered":"
With his new Report on Global Justice, Thomas Piketty proposes a radical form of global fiscal engineering: a worldwide wealth tax reaching as high as 20%, marginal tax rates of 90% on very high incomes, and an international sovereign wealth fund financing social and climate-related investments. The entire framework rests on the assumption that growth […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[134],"tags":[],"class_list":["post-10335","post","type-post","status-publish","format-standard","hentry","category-global-economy"],"acf":[],"yoast_head":"\n