This paper examines tipping in the Armstrong (2006) two-sided market model. By adding simple cost asymmetries to the original model, we show that the model is quite robust to dierences in network size and deviations from 50-50 market share. It well represents situations where asymmetries...

Two-sided platforms coordinate two types of users in order to increase the value of the whole system surrounding the platform. Users of a platform have different outside opportunities, and these influence their behavior on the platform. Platforms often limit these outside projects through...

Prior studies have shown that while ISPs are well positioned to provide residential and SME users critical protection from cybercrime, their incentives to do so are often insufficient. The presence of competition in providing broadband service is a factor we might expect to impact such...