Abandoning your users and moving to a platform where there's little money to be made is a questionable proposition for producers. And a lot of users will have second thoughts about moving to a platform they perceive to be distinctly inferior just because Apple are being dicks.
Also, as a reminder in case you live in a country where it isn't so: Contracts prevent most of Apple's customers from jumping platforms, and sunk costs in iOS apps tighten the lock-in.
Also, as a reminder in case you live in a country where it isn't so: Contracts prevent most of Apple's customers from jumping platforms, and sunk costs in iOS apps tighten the lock-in.