They care when they get big enough to attract attention from people like state AGs who can actually put the hurt on a bit. Uber and AirBnB both hit this point years ago; OpenAI's starting to hit it.
Sure, but in that scenario, it's a bit like the Last of Us characters being concerned about electrical meter readings. We'll have much bigger problems.
The only thing government cares about at this point is if information is shared with China.