Relatedly, I've been incredibly disappointed in how Google is failing to show much leadership in the gaming and set-top sides of Android.
They just want to sell their web services and collect data.
Android still lacks the comfort of iOS and WP 8.x for game development on the official SDK and the NDK is treated as a undesirable cousin that appeared unannounced.
Not everyone has a DS, not everyone has a Vita, but nearly everyone has a smartphone. Smartphones are the one device you always have on you, and it is by far the mobile device that consumes the most of your time.
This makes Android and iOS huge mobile gaming players, even if they didn't set out to do so. Gaming on smartphones and tablets has become a much larger thing than what Apple and Google ever suspected. How many hours do you figure people game on their Androids and iPhones every day, vs. "real" mobile gaming devices like the DS or the PS Vita?
Easy low-level OpenGL access paved the way, somewhat accidentally, and Apple has been shrewd in keeping middleware developers well-supported, and now they're working on a bunch of first-party libraries that lower the barrier to entry for game devs. And now, they're working on their own low-level hardware access.