We develop a two-sided market model with an upstream-downstream structure. More specifically, the platform consists of two rival upstream firms and a downstream monopolist. Each upstream firm negotiates the input price (license fee) with the downstream monopolist and also chooses the amount of...

In a duopoly model of horizontal and vertical differentiation, where consumers are ex-ante unaware of product qualities, we study the firms' incentives to signal quality via prices. Consumers, after they observe prices, can evaluate a firm's product quality before purchase if they incur a search...