I don't think the US is necessarily doing it permanently. Likely this is a short term geopolitical tactic to get China to play a little fairer on the field. It was always weird how this double standard existed where China would block Western companies but demand free access to Western markets. This is just tit for tat. Also, I don't think this is a "Trump" thing (although he has accelerated the process), relations between the US and China were already on the decline starting with Obama's first term.

I don't think it will be successful, I think China has made it very clear they will continue to play the US time and time again until they are dominant. The CCP will accept nothing but that. But that's the thinking behind the current moves.