The funny thing I find about the sort of Trumpian right-wingers is that they appear hostile to the business elites that the Republicans are traditionally hand in glove with. That dissonance appears to be resolved by claiming it's the Democratic Party in kahoots with the business elites. Which of course they also are, but surely not to the same depths that the Republican Party is.
I feel like the big problem with liberal democracy is that it's built on the assumption that everyone outside the "political class" is incapable of political agency and doesn't need any kind of political education. Their job is simply to listen to the political class and vote accordingly. Of course, it doesn't work like that and it never has, which is why mass politics always wins. If you can capture the emotional heart of that great mass of people who liberalism assumes are politically disinterested, mainstream politics doesn't stand a chance.
A lot of people know there is something wrong with the world they live in, they know that somewhere they are being screwed over, but without any political education they cannot accurately diagnose what the problem is or who is responsible. I don't think most of the Trumpian right-wingers understand that the problem of business elites is economic and political inequality. It's a problem of identity. These are people who aren't like us, who look down on us, who don't give us the respect we deserve. They're not going to clock that someone like Trump has far more interests in common with those business elites than he does with people like them, because they have not been taught to think about economic interests at all (think about what conclusions they might come to with that kind of knowledge). Trump is good because he is on their side, he respects them, he listens to them, he echoes their ill-defined grievances. Business elites are bad because they're different, they're weird, they're degenerate.
And of course, all this has happened before, which makes this whole situation very alarming.