Partly motivated by the recent antitrust investigations concerning Google, we develop a leverage theory of tying in two …

major businesses such as the media industry, banking, and the software industry. A well known textbook result in one …

prices and features of goods without incurring search costs. The platform alleviates sellers' competition by charging them …

We consider dynamic competition among platforms in a market with network externalities. A platform that dominated the … the focal platform whenever such equilibrium exists. Yet when faced with higher-quality competition, can a low …

We study the dynamics of competition in a model with network effects, an incumbent and entry. We propose a new way of …

This paper investigates competition between health insurance companies under different financing regulations. We … consider two alternatives advanced in recent German health care reform discussions: competition by contribution rates (health … contributions) and by fees (health premia). We find that contribution rate competition yields lower company profits and higher …

increases competition between the contestants, leading to higher total contest effort, unless the ex-post bargaining strength of … stronger competition …