I sincerely hope that the ongoing trade and business war will lead to nice new competitors to Android and iOS. The more countries they ban the higher the chances.
America's companies and government might very well be giving up a very comfortable monopoly in some key sectors right now by encouraging new ecosystems out of necessity.
At the same time, they are exploiting the monopoly (the US as a hole, that is). I suppose there's a line between "this is too much pain, I'm jumping ship" and "this is an acceptable amount of pain, I'll just pay my tribute and stay". I don't know whether they've crossed that line - especially when adopting a Chinese system won't really change a lot, it will only change who you depend on and whose wishes you need to comply with.