Markets for durable goods constitute an important part of the economy. In this paper I first briefly review the microeconomic theory literature on durable-goods markets, focusing mostly on the last ten years. I then discuss a number of my own recent analyses concerning optimal antitrust policy...

Consider a durable goods producer that has the option of monopolizing an aftermarket such as repair for its own product. An important question is whether such monopolization reduces welfare? We show that the answer to this question is frequently no. In particular, we explore three models that...

Consider a durable goods producer that potentially has market power in the aftermarkets associated with its products. An important question is to what extent, if any, should the antitrust laws restrict the firm's behavior in these aftermarkets? In this paper we explore a number of models...

Consider a durable goods producer that potentially has market power in the aftermarkets associated with its own products. An important question is to what extent, if any, should the antitrust laws restrict the firm's behavior in these aftermarkets? In this paper we explore three models that...

This paper first reviews economic theories for why firms tie their products and then discusses our views concerning what this review implies concerning optimal antitrust policy for tying cases. The review considers efficiency rationales for tying, price discrimination rationales, and various...

Given the focus on tie-in sales in several recent antitrust cases, economists have turned their attention to the motivations and consequences of tying, significantly improving our understanding. Tirole has written an excellent primer focused on what we know about tying and what he believes is...