A lack of platform-level competition among digital marketplaces can result in socially inefficient platform design and meaningful welfare losses, even independent of actively anticompetitive behavior. To illustrate the first-order effects platform design can have on competitive outcomes, I...

A lack of platform-level competition among digital marketplaces can result in socially inefficient platform design and meaningful welfare losses, even independent of actively anticompetitive behavior. To illustrate the first-order effects platform design can have on competitive outcomes, I...

This article provides an exploratory systematic mapping of the global ecosystem of COVID-19 pandemic response apps. After considering policy updates by Google Play’s and Apple’s App Store, we analyse all the available response apps in July 2020; their different response types; the apps’...