Friday, December 8, 2023

Platform Competition and Information Sharing

Platform Competition and Information Sharing


Georgios Petropoulos

Massachusetts Institute of Technology (MIT); Stanford University

Bertin Martens

Tilburg Law and Economics Center (TILEC); Bruegel

Geoffrey Parker

Dartmouth College

Marshall W. Van Alstyne

Boston University – Questrom School of Business; Massachusetts Institute of Technology (MIT) - Sloan School



Digital platforms, empowered by artificial intelligence algorithms, facilitate efficient interactions between consumers and merchants that allow the collection of profiling information which drives innovation and welfare. Private incentives, however, lead to information asymmetries resulting in market failures. This paper develops a product differentiation model of competition between two platforms to study private and social incentives to share information. Sharing information can be welfare-enhancing because it solves the data bottleneck market failure. Our findings imply that there is scope for the introduction of a mandatory information sharing mechanism from big tech to their competitors that help the latter to improve their network value proposition and become more competitive in the market. The price of information in this sharing mechanism matters. We show that price regulation over information sharing like the one applied in the EU jurisdiction increases the incentives of big platforms to collect and analyze more data. It has ambiguous effects on their competitors that depend on the exact relationship between information and network value.

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