The rise and success of digital platforms (such as Airbnb, Amazon, Booking, Expedia, Ebay, and Uber) rely, to a large extent, on their ability to address two major issues. First, to effectively facilitate transactions, platforms need to resolve the problem of trust in the implicit or explicit...

Across the world, regulators and policy makers are grappling with how to establish a competitive, safe and fair online environment that also safeguards users’ fundamental rights as citizens. Ahead of the European Commission’s Digital Markets Act (DMA), this book “Digital markets and online...

This report provides an overview on the economics of attention intermediaries. It addresses the following questions: What are the economics of attention intermediaries? For competition policy, how should markets be defined and market power of attention intermediaries be assessed? What theories...

Digital platforms have reshaped many product markets and play an increasingly important role in economies around the globe. Some of these platforms have become powerful players and may possess a lot of market power. Economists use a number of indicators to assess market power. In this article we...

In this article we present and critically evaluate the newly introduced section 19a of the German Competition Act. The provision applies to operators of two-sided platforms and networks that the Bundeskartellamt classifies as being of ‘paramount significance for competition across markets’....

With the growing economic and societal importance of online platforms, the question of their liability for illegal content or products they host becomes more important. Based on an analysis of platforms' incentives, we address the appropriate liability rule for hosting service providers and...

This paper provides a description of the crowdfunding sector, considering investment- based crowdfunding platforms as well as platforms in which funders do not obtain monetary payments. It lays out key features of this quickly developing sector and explores the economic forces at play that can...