situations where the protection of a monopolist against entrants is a welfare maximizing policy. The introduction of more firms …

We analyze Bertrand duopoly competition in markets with network effects and consumer switching costs. Depending on the … equilibrium. For large network effcts both monopoly and market sharing equilibria exist. Our welfare analysis reveals a … fundamental conflict between maximization of consumer surplus and social welfare when network effects are large. We also analyze …

In a framework of a unionised international Bertrand duopoly with differentiated products, this paper analyses national …

and price competition in a duopoly with differentiated products. By allowing for partially privatizing a state …

This paper studies the welfare consequences of a vertical merger that raises rivals' costs when downstream competition … nevertheless improve welfare if it involves a downstream firm whose cost is "low enough". This is because by raising the input …

applies more generally to duopoly pricing. …

, this paper contributes to the analysis of the welfare distortions due to these regulations. In the context of a duopoly …, our results show that social welfare is not monotonic with the regulatory threshold. In particular, we obtain the … paradoxical result that a policy decision of increasing the threshold might involve a dramatic decrease in welfare in some markets …

product quality differentiation by firms in product markets, and how this determines relative welfare outcomes of different … unionization reduces output, consumer surplus and overall welfare are always lower with respect to the case in which labour market … is perfectly competitive, and decentralized unionization is generally welfare enhancing with respect to centralized …

clauses and the likely effects on social welfare. We show that exclusivity agreements are especially profitable for shopping … centers and detrimental to social welfare if competition is intense between the two shopping centers. We argue that the focus …