Barriers to entry are regarded as major impediments to the working of markets. Entry must not necessarily actually take place - the perceived threat of entry may encourage incumbent firms to behave as if they are in a competitive market, even if they are not. We present empirical evidence on...

We develop a simple model of competition for the market that shows that, contrary to the Arrow view, endogenous entry threat in a market induces the average firm to invest less in R&D and the incumbent leader to invest more. We test these predictions with a Tobit model based on a unique dataset...

In the advent of postal market liberalization in several European countries we expect that the incumbent operators anticipate entry by competitors who are not required to offer universal service, i.e. coverage of the entire country and uniform pricing. The market for postal service exhibits...

Die Regulierung des Telefonnetzes ist nach wie vor umstritten. Einige Autoren plädieren dafür, anhand der Theorie bestreitbarer Märkte zielgenau regulierungsrelevante Teilbereiche zu identifizieren und entsprechende regulierende Maßnahmen zu ergreifen. Reicht diese Argumentation aus, um die...

EU anti-dumping and competition policy overlap to a certain extent in their goals and means. However, there are many differences in the aims and means of both policies, which make the relationship between both policies a multifaceted one. This paper reviews the conceptual differences between...

We examine the persistence of monopolies in markets with innovations when the outcome of research is uncertain. We show that for low success probabilities of research, the incumbent can seldom preempt the potential entrant. Then the efficiency effect outweighs the replacement effect. It is vice...

We explore how the threat of entry influences the innovation activity of an incumbent. We show that the incumbent's investment is hump-shaped in the entry threat. When the entry threat is small and increases, the incumbent invests more to deter entry, or to make it unlikely. This is due to the...

Die Hauptthese dieses Vortrags ist: die geeignete Definition von Marktzutrittsschranken hängt davon ab, welches Leitbild des Wettbewerbs man vor Augen hat. Der Begriff der Marktzutrittsschranke muss zu diesem Leitbild 'passen'. Die Wahl des Leitbildes ist aber selbst abhängig von der...