You may mostly forget about Trump, he'll be out in a fortnight.
The problem now is your tech overlords, who have shown that they are very willing to silence and deplatform their political opponents, and who seems closely aligned with your new government. Good luck voting them out next time.
No, it really isn't, and this fear-mongering rhetoric is extremely unhelpful. There is bi-partisan support for antitrust actions towards these companies. If trump's (former?) followers are serious about breaking up big tech, they should stop repeating trump's baseless lies about how big tech is some sort of satanic radical leftist communist conspiracy, and get it on these bi-partisan lawsuits.
This bipartisan support might evaporate overnight if they cut a deal with those currently in power, to keep them in power indefinitely by totally silencing and deplatforming their opposition, in exchange for going about unchecked. It's a win-win for both sides, so why wouldn't it happen. It certainly did happen in Russia, how is US any diffetent? Because you have honest and responsible politicians?
I'm interested to learn what exactly happened when businesses all fall in line with one ruling party in Russia. I can imagine the big businesses colluding with the government for some short-term gains, but a lot of the free press in the US has nothing to do with big businesses and it is impossible for me to imagine all of them falling in line with the government.
Also I don't see how pandering to the government is always a win-win situation for big businesses in the US. The tech companies have their own interests which do not always align with either political party.
I guess what I'm trying to get at is that the US Constitution certainly doesn't rely on the lousy assumption that all winning politicians will be honest and all private companies will be "responsible", by some definition of responsible. It's more about leveraging self-interest to preserve a check and balance at all levels so that not a single power runs wild.
With a single party in control of all branches, doesn't your idea of preserving checks and balances go out the window? If the goal were to preserve checks and balances, we wouldn't have seen high level politicians asking people to move to Georgia solely to vote in the Senate race. We also would have taken the time to do a real full audit of every ballot. No, politicians and big corporations like power unchecked and unbalanced.