The laws of America already provide a way to resolve that though. If one company is becoming too powerful and unfairly damaging competition because of it, anti-trust exists.

Arguably twitter isn’t even that powerful except that the president uses it as an official communications platform. Before this current administration, Twitter was circling the drain. It was an afterthought in modern social media. The president pretty much singlehandedly made twitter as important as they are today. If the president doesn’t like twitters TOS he could switch to Facebook and have an even greater reach than he does today. So it’s hard to argue that twitter is actually the problem, but if they are, the easy answer is stop using their platform and switch to a competitor.