It is well known that the Internet has significantly reduced consumers'search costs online. But relatively little is known about how searchcosts affect consumer demand structure in online markets. In this paper,we identify the impact of search costs on firm competition and marketstructure by...

Information systems and the Internet have facilitated the creation of used product markets that feature a dramatically wider selection, lower search costs, and lower prices than their brick-andmortar counterparts do. The increased viability of these used product markets has caused concern among...

This paper examines the preferences of a foreign firm and awelfare-maximizing host country government over two modes of foreigndirect investment (FDI): de novo entry by the foreign firm andacquisition of the domestic incumbent. Two crucial features of the modelare the presence of network...

This paper examines the justifications, history, and practice ofregulation in the US telecommunications sector. We examine the impact oftechnological and regulatory change on market structure and businessstrategy. Among others, we discuss the emergence and decline of thetelecom bubble, the...

We propose a general model of imperfect competition among multi-productfirms, the consumption of whose goods yields externalities from oneconsumer to another. We extend the allocation approach of Weyl (2010)'smonopoly model, proposing a solution concept, Insulated Equilibrium,that allows for...

This paper investigates the results of competition between two profit-seeking telecommunications carriers, as might occur when cable TV providers compete with local exchange carriers. Each firm has a fixed capacity that it can use to offer two different services, such as telephony or video. We...

We offer a new perspective on games of irreversible investment under uncertainty in continuous time. The basis is a particular approach to solve the involved stochastic optimal control problems which allows to establish existence and uniqueness of an oligopolistic open loop equilibrium in a very...