Towards Efficient Information Sharing in Network Markets

ACLE

Amsterdam Law School

Abstract:Digital platforms facilitate 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 both on-platform, among merchants, and off-platform, among competing platforms. This paper develops two product differentiation models to study private and social incentives to share information within and between platforms. We show that there is scope for ex-ante regulation of mandatory data sharing that improves social welfare better than competing interventions such as barring entry, break-up, forced divestiture, or limiting recommendation steering. These alternate proposals do not make efficient use of information. We argue that the location of data access matters and develop a regulatory framework that introduces a new data right for platform users, the in-situ data right, which is associated with positive welfare gains. By construction, this right enables effective information sharing, together with its context, without reducing the value created by network effects. It also enables regulatory oversight but limits data privacy leakages. We discuss crucial elements of its implementation in order to achieve innovation-friendly and competitive digital markets.Speaker: Dr. Georgios Petropoulos is Research Associate at MIT, a digital fellow at Stanford University, and a non-resident fellow at Bruegel. His research focuses on the digital economy, competition policy, and labor economics. He has been a member of the academic high-level expert group of the European Commission providing advice on how we should regulate digital platforms (Digital Markets Act). He has also been an expert advisor of the Hellenic Competition Authority on digital markets, e-commerce, and platform regulation.Speaker’s paper: <a href="https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3954932" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3954932</a>

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