sellers shape the market structure in platform industries. If product market competition is tough, sellers avoid competitors … markets, several homogeneous platforms segment the market. Instead, if product market competition is soft, agglomeration on a … competition. …

competition, which explains why buyers tend not to be able to observe all sellers on online platforms. If sellers are identical …, increasing seller prominence for any consumer segment increases competition, and profit is maximized when it is randomized across …

This article studies competition between different types of ad-funded platforms attracting consumers with free services … that studies competition between standard platforms and social media platforms (with same-side network effects). We find …) externality on each other, competition fails to protect consumer welfare and behaves erratically. Finally, we present a few …