One thing I'm excited for in the digital markets app is app stores that allow a "paid upgrade" model. This is pretty much untenable with the current incumbents.

One thing I'm excited for in the digital markets app is app stores that allow a "paid upgrade" model. This is pretty much untenable with the current incumbents. I'm working on a consumer productivity app and really want to provide it as a paid upgrade model, because I'm philosophically opposed to SaaS for everything as well. But, when I go cross-platform, I won't be able to offer the paid upgrade model on either iOS or Android.