Economics serving society

September 2021

Insider Imitation and Innovation on Platforms

Erik Madsen and Nikhil Vellodi*

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Ecommerce platforms are an increasingly dominant source of global retail. Such platforms often serve two distinct roles: a marketplace, wherein the platform hosts third-party sellers and profits directly through commissions and fees, and a retailer, wherein the platform launches their own private-label products in direct competition with these sellers...

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What does “aging well” mean?

Bénédicte Apouey*

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To the traditional view of aging, which emphasizes the decrement of physiologic function, one may be tempted to oppose the notion of “successful aging”. In this approach, popularized by Rowe and Kahn (1987, 1998), successful aging is defined using three clinical and biomedical criteria: absence of serious disease and disability...

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Diffusion of soil pollution in an agricultural economy. The emergence of regions, frontiers and spatial patterns

Carmen Camacho* and Alexandre Cornet

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Every year, agriculture is responsible for a loss of 24 billion tonnes of fertile soil (UNCCD, 2017). This loss implies major risks in food security and crop sustainability worldwide. There is an urgent need to understand and foresee the impact of agriculture on soil fertility since food demand will keep increasing in the next decades, pushed by population growth...

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Profit-splitting and tax regulations for digital platforms

Francis Bloch* and Gabrielle Demange*

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The rules for taxing the profits of multinational corporations were devised in the 1920s and are thus clearly not adapted to the digital economy; in particular, they allow GAFAM largely to escape paying any tax on their profits. To address this problem, several countries, including France, have proposed the unilateral imposition of a specific tax...

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Toward a theory of ecosystem well-being

Marc Fleurbaey* and Christy Leppanen

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Social welfare analysis, as practiced by economists and related scholars and practitioners, is focused on human beings and derives the value of ecosystems solely from the services such systems provide to the human population. This anthropocentric approach may be able, in principle, to achieve good standards of stewardship for the environment...

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* PSE Members

To read the previous synthesis (since nov. 2013), follow this link