review and rating systems reduce information asymmetries between consumers and service providers, enhancing competition …

This paper considers platform competition in a two-sided market that includes buyers and sellers. One of the platforms …

In a recent paper, Alipranti et al. (2014, Price vs. quantity competition in a vertically related market, Economics … Letters, 124: 122-126) show that in a vertically related market Cournot competition yields higher social welfare compared to … Bertrand competition if the upstream firm subsidises the quantity setting downstream firm's production via negative wholesale …

of demand and retail competition. Whether countervailing buyer power arises, in the form of lower negotiated prices …

, we demonstrate endogenous choice of competition mode with each exclusive channel. Recent market structure captures that … competition appears as an equilibrium with the possibility of highest social welfare when the product differentiation is … intermediate. Otherwise, Bertrand (Cournot) competition appears as an equilibrium and obtain Pareto efficiency without (with …

and sellers. Platform actors expect, and legislators increasingly require that competition, including recommendations, are … fairness definitions exist. This article considers these challenges, develops a five-step approach to measure fair competition … countries. They find no consistent evidence for unfair competition through search engine recommendations. The article also …

We propose a novel approach to study competition among platforms. In particular, we consider representative consumer …, intermediating a variety of commodities offered by sellers under monopolistic competition and free entry, and competing à la Cournot …

anticompetitive effects. Most importantly, antitrust analysis should focus on competition for seeking and providing attention rather … than the particular products and services used for securing and delivering this attention. The existence of competition …