One way to stop competition is to make AI so scary that strict regulations stop anyone from trying to start a new company. Oh, what about the founders? No, they're cool, they been doing it since the beginning, and they know what they are doing.
Spin off Phone service as a separate company, and sell it, or dissolve it. Bonus points for selling it to China, but the Government takes it over instead.
I don't see the problem. People are the ones who are supposed to have free speech. We're not there yet for us to be worrying if chatbot tools have it too. This is up there with being mad that your Call of Duty censors cuss words. You want to criticize, use your own damn words.