This paper explores the ability of an incumbent to use introductory offers to dominate a market in the face of a more efficient rival when network effects rather than scale economies are present. Both in the case of one-sided and two-sided markets, for introductory offers to be profitable when...

Tacit collusion is explored under a strategy in which, loosely speaking, firms match the lowest price set by any firm in the previous period. Conditions are provided under which this strategy supports collusive outcomes in a subgame perfect equilibrium. In contrast to traditional results, the...