> satisfied governments globally

This is the easy part if he really wants to choose the free speech absolutist route. Close the European offices (which will probably happen anyways due to mass firings), bank accounts and move it all to America or other friendly jurisdiction if needed for tax purposes. They can sue all they want in Europe but American courts won't enforce a judgement that isn't compatible with American law. European governments can decide to block Twitter but then they'll have a bunch of unhappy voters. But this is unlikely.