Freemium competition among ad-sponsored platforms

This paper studies competition between ad-sponsored platforms that strategically determine business models. In addition to basic services including annoying advertisements, each platform decides whether to introduce an ad-free premium service (i.e., a freemium business model). Freemium platforms encounter a trade-off between increasing the number of premium users for the subscription-based revenues and increasing the number of basic users for the ad-sponsored revenues. I characterize how the freemium platforms should segment their users into basic and premium services. Moreover, I show that the equilibrium business model choice depends on the extent of fixed costs for introducing a premium service. When the fixed cost is at an intermediate level, asymmetric equilibria may arise: i.e., only one platform introduces the premium service. Competing platforms may have an incentive to coordinate their choices toward asymmetric market structures; however, these structures can be harmful to both consumers and advertisers.