Entry Deterrence and Free Riding in License Auctions: Incumbent Heterogeneity and Monotonicity

We examine free riding for entry deterrence in license auctions with heterogeneous incumbents. We establish the monotonicity of randomized preemptive bidding equilibria: an incumbent with a higher entry-loss rate has greater free-riding incentive, choosing a lower deterring probability. We then identify conditions for the existence of a series of fully or partially participating equilibria such that two or more incumbents with bounded heterogeneity in their entry-loss rates participate in randomized preemptive bidding. As an application, we examine a simple case of a bipartite group of participating incumbents consisting of one “leader” and many “followers”. We show that the policy of limiting the leader’s participation (set-asides for entrants, limiting participation of incumbents with excessive market shares, etc.) may or may not increase entry probability.

Limited Liability and High Bids in English Auctions

In this paper, we investigate how limited liability affects firms’ bidding behavior in license auctions. We focus on a model where firms first seek financing from banks, then bid for the licenses, and the winning firms set prices in a product market with uncertain demand. In a model of one license, the winning firm becomes a monopoly. A higher bid induces a higher product price. In a model of two licenses, a higher bid provides a positive externality to all other firms. In both models, bids are extremely high in the English auction, and the English auction always generates more revenue than the first-price/discriminatory auction.