We provide a general framework to analyze competition between any number of two-sided platforms, in which buyers and sellers can multihome, and platforms compete on transaction fees charged on both sides. The framework allows buyers and sellers to have heterogenous benefits from using platforms...

We analyze oligopolistic third-degree price discrimination relative to uniform pricing when markets are always covered. Pricing equilibria are critically determined by supply-side features such as the number of firms and their marginal cost differences. It follows that each firm’s Lerner index...

This paper studies oligopolistic competition in education markets when schools can be private and public and when the quality of education depends on “peer group” effects. In the first stage of our game schools set their quality and in the second stage they fix their tuition fees. We examine...

This paper generalizes the frequently used Hotelling model for two-sided markets in order to determine the equilibrium market shares. We show that advertisement levels depend neither on the media price nor on the location of the media firm. An increase in advertising revenues does not change...

We analyze an oligopolistic market where a domestic and a foreign firm are engaged in a takeover battle for a domestic competitor. Any merger or acquisition (M&A) must be approved by a welfare maximizing domestic competition agency which may or may not be prone to "economic patriotism". A...

Two types of agents interact on a pre-existing free platform. Agents value positively the presence of agents of the other type but may value negatively the presence of agents of their own type. We ask whether a new platform can find fees and subsidies so as to divert agents from the existing...