A lack of platform-level competition among digital marketplaces can result in socially inefficient platform design and meaningful welfare losses, even independent of actively anticompetitive behavior. To illustrate the first-order effects platform design can have on competitive outcomes, I...

This study compares the impact of antitrust regulations on firm market value for Chinese versus U.S. internet platforms. Applying an event study approach to daily stock market data during 2010–2022, we investigate the cumulative abnormal returns of Hong Kong- and U.S.-listed internet...

Digitale Plattformen sind auf vielen Märkten aktiv und spielen deshalb auch bei Innovationen eine entscheidende Rolle. Sie selbst bringen Innovationen hervor, können aber auch bei den Plattformnutzern und anderen Akteuren des Plattformökosystems Innovationen incentivieren. Plattformen...

There is broad international consensus that ex ante regulation is needed to address the market dominance of the very largest digital platforms and that there are benefits to having broadly coherent regulatory approaches across jurisdictions. Regulation in any one jurisdiction will have...

Chapter 1. Introduction -- Chapter 2. Defining Competition & AI Developments -- Chapter 3. Competition & Governance -- Chapter 4. Competition, Market Power and Politics -- Chapter 5. Competition & AAI -- Chapter 6. US versus EU Competition -- Chapter 7. Chicago School, Harvard School, New...

The author provides an overview of carbon markets and explains how emissions trading can be important in encouraging the reduction of CO2 emissions in an efficient manner. He describes the key steps in establishing a cap-and-trade system, and reviews the European experiences with emissions...