Seems to me the biggest hurdle to moving/finding customers via the Google/Android platform is that they won't spend money over there.

The feature/capability parity between the platforms means they are, in fact, both capable of serving these markets. But people want to vote with their dollars in the iOS ecosystem, and now the players want to change that ecosystem.

I'm not entirely convinced that this is Apple's problem, in as much as it is Google's fault for not fostering a properly competitive revenue delivery platform, even though it has the maturity and standing to do so.