It is often assumed that consumers benefit from the internet because it offers a "long tail" with more variety of products to choose from. However, search costs may block the long tail effect and result in the dominance of superstars. This paper examines the variety hypothesis in the entire...

The effectiveness of R&D subsidies can vary substantially depending on their characteristics. Specifically, the amount and intensity of such subsidies are crucial issues in the design of public schemes supporting private R&D. Public agencies determine the intensities of R&D subsidies for firms...

We examine the hold-up problem of price regulation and compare it with the monetary policy credibility problem. For both, reputational solutions are possible provided that the policymaker is sufficiently far-sighted, but the hold-up problem in regulation turns out to be more serious than the...