This paper analyzes the unilateral choices of application compatibility by platforms and the endogenous affiliations of two different groups (content providers and users). We find a novel result that for both platforms to unilaterally choose application compatibility is not an equilibrium unless...

I develop a semi-structural approach to identify network effects on two-sided monopoly platforms without data on prices and quantities. When total revenue data is available, the test is sufficient. When separate revenue data is available on the two sides, the test is both necessary and sufficient.

Bundled discounts by pairs of otherwise independent firms play an increasingly important role as a strategic tool in several industries. Given that prices of firms competing for the same consumers are strategic complements, one would expect their discounts levels also to be strategic...

We analyze the impact of passive partial ownership (PPO) on horizontal mergers. We show that antitrust authorities ignoring the effects of previous PPO acquisitions invite sneaky takeovers: a PPO is strategically used prior to a full takeover to get a merger approved which is in fact detrimental...

We analyze price competition between two brands. Buyers consist of switchers and two segments of customers with limited brand loyalty. We identify a unique symmetric mixed-strategy price equilibrium and find that competition is most relaxed when there exists some switchers.

This paper provides two characterizations of the retailer’s markup relative to the manufacturer’s markup in vertical relationships with homogeneous manufacturers and homogeneous retailers. We first show that retailer’s relative markup is equal to the ratio of the retail pass-through to the...

This paper studies the ambiguous welfare effects of compatibility in a platform market with endogenous content provision. Compatibility can be particularly harmful if it leads to reduced content but can be beneficial if content is sufficiently increased.

This paper extends a discrete-choice model of differentiated product demand to consider consumer heterogeneity in dynamic games. Our approach applies to games involving both multi-product firms and static price competition.

This paper examines the effects of obtaining a strategic advantage of becoming the leader in the market on insiders’ incentives to merge and consumer welfare. We show that being the market leader is privately profitable for the merging insiders. We also show that the leading merger would...

This paper investigates the impacts of competition structures on firms’ incentives for adopting strategic environmental corporate social responsibility (ECSR) certified by a Non-Governmental Organization. We show that, to induce firms to adopt certified ECSR, the certifier will set a standard...