We study optimal risk adjustment in imperfectly competitive health insurance markets when high-risk consumers are less likely to switch insurer than low-risk consumers. First, we find that insurers still have an incentive to select even if risk adjustment perfectly corrects for cost differences...

The neutral architecture of the Internet is being challenged by various parties, such as network operators providing the connections to end-users, who are interested in gaining control of the information exchanged over the Internet. What are the effects on competition and welfare of such...

In this study we address the economic performance of ex ante regulation of the telecommunications industry and compare this regulatory framework to alternative approaches that respond better to the developments in the sector. The focus is on the Dutch market with two fixed networks with national...