> Because they have massive platform specific teams, and they would like not to.

I'm somewhat shocked at the size of some of the mobile app development teams at some of these companies. There's no way they need that many developers. What are 100's of developers doing on a single app for a single platform? How is there enough work for that many people? The overhead must be unbelievable.

I can't imagine that adding a platform abstraction is going to fundamentally change the headcount if your headcount is already ridiculous. It just doesn't remove that much effort.