We show that the incentive to engage in exclusionary tying (of two complementary products) may arise even when tying cannot be used as a defensive strategy to protect the incumbent's dominant position in the primary market. By engaging in tying, an incumbent fi rm sacrifices current pro ts but...

The most controversial area in competition policy is that of exclusionary practices, where actions are taken by dominant firms to deter competitors from challenging their market positions. Economists have been struggling to explain such conduct and to guide policy-makers in designing sensible...