Digital platforms operate in multisided markets providing services through the internet to two or more distinct groups of users, between which there are indirect network effects. Direct network effects are frequently present within each group. Therefore, online platforms usually present both...

Growing numbers of legislators and policy experts charge that tech firms such as Amazon, Google, Facebook, Apple, and Microsoft are “monopolies,” with the potential power to harm consumers.Many economists, lawyers, and politicians say that economic features of these companies' product...

Antitrust authorities are particularly concerned with the dominant market position of tech giants such as Google, Facebook, and Amazon. These digital conglomerates are characterized by platform-based business models. However, despite their dominance, they are competing with each other to attract...

This paper examines the forms, goals, and results of price discrimination. It reviews various economic analyses and critiques of the three Pigovian types of price discrimination. It observes that economists' traditional concern with aggregate welfare has not, until recently, been accompanied by...

In recent years, two law review articles have proposed that the United States regulate commercial sports through a direct federal commission, rather than through traditional antitrust remedies. Nevertheless, the practical realities of commercial sports’ power to influence government policy...

This paper empirically illustrates a new aspect of vertical integration that may hurt consumer welfare other than foreclosure and misuse of rivals' information by considering the possibility that a vertical merger turns out detrimental to the merged entity. My empirical results using data from...

We examine the competitive effects of the vertical integration of gasoline refineries and retailers in the U.S. Adapting the first-order condition approach of static oligopoly games to the analysis of vertically related oligopolies, we develop a novel framework for directly evaluating the...

Recent experimental simulations have shown that autonomous pricing algorithms are able to learn collusive behavior and thus charge supra-competitive prices without being explicitly programmed to do so. These simulations assume, however, that both firms employ the identical price-setting...

Decentralised finance (DeFi) is a category of unlicensed, unregulated, and non-custodial financial services that utilise public, distributed ledgers like Ethereum. The Bloomberg Galaxy DeFi Index, launched in August 2021, includes nine Ethereum-based projects – non-custodial exchanges as well...

This paper considers the integration of competition policy and innovation policy in the context of R&D cooperation. An explicit comparison of the welfare losses under ex-ante and ex-post R&D cooperation reveals differing incentives to undertake R&D in both regimes. The strength of these...