As a non-American I'd much rather the USA has my data than China has it.
I do believe that competition limits the exploits. If there's an alternative, you have to fear losing your customers (and their money), so you limit what you do to them. If there isn't any, why would you? Right now, the competition is basically only Apple vs Google. Both USA, both from California. A bit more diversity would be nice.
I'd love some real competition. Chinese, Russian, European alternatives. I would have a hard time trusting Chinese or Russian systems, maybe rightfully, maybe because decades of Propaganda have taken their toll. I'd still like to see them.
As non-American (and non-Chinese I assume), the Chinese do not care about you, but the Americans very much do.
Neither can be trusted to retain a glass of water, let alone personally identifying information that can spur advertising campaigns and sway elections in countries around the world.