When will a monopolist have incentives to foreclose a complementary market by degrading compatibility/interoperability of his products with those of rivals? We develop a framework where leveraging extracts more rents from the monopoly market by 'restoring' second degree price discrimination. In...

The Spanish electricity spot market is highly concentrated both on the seller and the buyer side. Furthermore, unlike electricity spot markets in other deregulated electricity systems, large buyers and sellers are typically vertically integrated. This allows both large net sellers and large net...

Theories of bundling have had great importance in European competition policy in recent merger control and abuse of dominance cases. Prominent examples include GE/Honeywell, Tetra Laval/Sidel and the recent Microsoft decision. The European Commission has been heavily criticized in all of those...

When regulated markets are liberalized, economists always stress the benefits of fragmenting existing capacities among more firms. This is because oligopoly models typically imply that a larger number of firms generates stronger competition. I show in this paper that this intuition may fail...

Financial constraints are an important impediment to the growth of small businesses. We study theoretically and empirically how the financial constraints of agents affect their decisions to exert effort, and, hence the organizational decisions and growth of principals, in the context of...

We use experiments to analyze what type of communication is most effective in achieving cooperation in a simple collusion game. Consistent with the existing literature on communication and collusion, even minimal communication leads to a short run increase in collusion. However, in a limited...

In this paper we develop a theory of union bargaining power based on firm-specific skills acquired by the insider work-force. We show that unions increase the bargaining power of insiders only in states of the world in which the firm would like to retain insiders but not hire outsiders. Union...

The Paper addresses the issue of coordinated effects of mergers in the framework of a differentiated products model. Firms’ assets are product varieties that can be sold individually or entirely transferred to another firm in a merger. We show that under symmetric optimal punishment schemes...

In this paper we analyse the role of asymmetric information between firms and consumers about market conditions. In standard models of oligopoly informational advantages of firms over customers do not play a role because all prices are observable. When customers are unable to observe all...

This paper provides a systematic analysis of the welfare effects of vertical integration by a monopolistic input supplier into a monopolistically competitive downstream industry. We give sufficient conditions on consumer preferences that lead to Pareto improving vertical integration. We...