Recent cases in the US (Meritor, Eisai) and in the EU (Intel ) have revived the debate on the use of price-cost tests in loyalty discount cases. We draw on existing recent economic theories of exclusion and develop new formal material to argue that economics alone does not justify applying a...

Rasmusen et al. (1991) and Segal and Whinston (2000) show that an incumbent monopolist might prevent entry of a more efficient competitor by exploiting externalities among buyers. We show that their results hold only when downstream competition among buyers is weak. Under fierce downstream...

This article shows that buyers' coordination failures might prevent entry in an industry with an incumbent firm and a more efficient potential entrant. If there were a single buyer, or if all buyers formed a central purchasing agency, coordination failures would be avoided and efficient entry...

Miscoordination of buyers might prevent entry in an industry with an incumbent and a more efficient potential entrant. Buyers' power therefore favours entry by eliminating coordination problems. We also identify a mechanism which facilitates entry: if the potential entrant could credibly offer...

This paper studies a model where exclusive dealing (ED) can both promote investment and foreclose a more efficient supplier. While investment promotion is usually regarded as a pro-competitive effect of ED, our paper shows that it may be the very reason why a contract that forecloses a more...

Rasmusen et al. (1991) and Segal and Whinston (2000) show that an incumbent monopolist might exclude entry of a more efficient competitor, by exploiting externalities among buyers. We show that their results hold only when downstream competition among buyers does not exist or is weak enough....

We propose a simple theory of predatory pricing, based on incumbency advantages, scale economies and sequential buyers (or markets). The prey needs to reach a critical scale to be successful. The incumbent (or predator) has an initial advantage and is ready to make losses on earlier buyers so as...