The European Commission is charged with implementing the Digital Markets Act (DMA) which will impose a list of 22 do and don't to Big Tech platforms in March 2024. Based on economic and legal reasoning, this paper asks how the Commission can fulfil this challenging task effectively. The paper...

Excessive pricing by a dominant firm is unlawful in many countries. To assess whether it is excessive, the dominant firm's price is often compared with price benchmarks. We examine the competitive implications of two such benchmarks: a retrospective benchmark where the price that prevails after...

Several competition authorities consider the exemption of horizontal agreements among firms from antitrust liability if the agreements sufficiently promote public interest objectives such as sustainable consumption and production. We show that when consumers value sustainable products and firms...

There is a growing concern that minority shareholding (MS) in rival firms may facilitate collusion. To examine this concern, we exploit the fact that leniency programs (LPs) are generally recognized as a shock that destabilizes collusive agreements and study the effect that the introduction of...

There is a growing concern that minority shareholding (MS) in rival firms may facilitate collusion. To examine this concern, we exploit the fact that leniency programs (LPs) are generally recognized as a shock that destabilizes collusive agreements and study the effect that the introduction of...