We examine an adverse selection relationship in which the principal is unaware of the ex ante distribution of the agent's types. We show that the minimax regret mechanism, which is an incentive compatible and individually rational mechanism that minimizes the maximal principal's regret, requires...

In this paper we analyze the strategic decisions of the government, the incumbent and the pirate in a market where the good is piratable. We show that deterred or accommodated piracy can occur in equilibrium, but pure monopoly cannot occur for any anti-piracy policy. We also show that the...