Meanwhile, banning a handful of Chinese phone manufacturers does absolutely nothing to address your "only 2 phone OSes" concerns. In fact, it further validates my previous comment, because now there are fewer OEMs operating in the US who could introduce an alternative to Android or Google.
I'm not sure I understand the argument you are trying to make here. I agree that having new OS opportunities is a great thing, but removing competition from the US market means there's less incentive for companies still in the US market to create alternative operating systems. Are we basically saying the same thing?