To stay on top of global competition, firms and governments often need to acquire innovative goods and services, including ideas and research, from their strategic suppliers. A careful design of procurement policy is crucial to make potential suppliers generate and sell the most suitable...

R&D alliances (Research Joint Ventures or other institutional forms) normally involve repeated, non-contractible actions (investments in R&D), and uncertainty regarding both success and the termination date. Accordingly, we model these agreements as equilibria of infinite-period supergames. Our...

We propose a basic theoretical model of eBay’s reputation mechanism, derive a series of implications and empirically test their validity. Our theoretical model features both adverse selection and moral hazard. We show that when a seller receives a negative rating for the first time his...

I revisit the relation between aftermarket power and basic market competition. I consider an infinite period model with overlapping consumers: in each period, one consumer is born and joins one of the existing installed bases, then aftermarket payoffs are received by sellers and consumers, then...

Frequently, aspiring entrants have only limited information about their potential rivals’ entry decisions. As a result, the outcome of the entry game may be that more firms enter than the market can sustain; or, at least, that unnecessary entry investments are made. We refer to these outcomes...