Getting out of hand? This isn't some new behavior from Apple breaking with past behavior. Apple already bans competing web browsers with their own rendering engines (forcing them to use the slower Mobile Safari without JIT), bans any app which duplicates any functionality Apple has or is considering adding to their platform, and forces all providers to either give them 30% or not have in-app purchases or even links to purchases. Banning bitcoin send functionality is tame compared to that.