I'm 90% sure China will be ready, able, and willing to sell a reasonably priced alternative to Americans by the time of the next US presidential election.
And the remaining 10% includes not just that they can't industrial-espionage their way to copying both product and launch vehicle, but also all the combined odds of "WW3" and "the US no longer exists" and the other less dramatic things that may stand in the way.
The most vehement Trump supporters are not the type of demographic that will make enough purchases of Teslas and Starlink to make any difference overall to the company...
The most vehement Trump supporters I know have been Musk fans since the time he supported Babylon Bee when they were kicked off Twitter.
They believe that the Climate Change stuff is all a big con to get government money, of course.
And those MAGA now have Tesla's and Starlink because.