It comes to a point where they need an underclass to insulate them from the masses; look how cheaply Trump bought his paramilitary though, he only had to spend the money taken from those he's suppressing, didn't even have to reduce his own wealth one bit; the military and his new brown shirts will ensure the rich stay rich and that eventually there is massive starvation (possibly water/fuel poverty first).
Or USA recovers the constitution, recognises climate change and start to do something about it.
It seems like the whole of humanities future hinges on a handful of billionaires megalomania and that riding on the coattails of Trump's need to not face justice for his crimes.