(As I've developed for both platforms, I think I have some standing to say this) Hold on, it's not that we don't want to build cross-platform apps, at least no

(As I've developed for both platforms, I think I have some standing to say this) Hold on, it's not that we don't want to build cross-platform apps, at least not universally. In my case, it's because I believe the contortions involved in abstracting out multiple wildly-divergent APIs built for different languages to a common system runtime necessarily lowers fidelity and quality for both. "Write once run anywhere" ends up being a lot harder than "Learn once write anywhere" - I'm hopeful that React Native will demonstrate the success of this approach on mobile (even though, personally, I wish there were a non-JS option).