I'm not proposing and end of history, but things can remain in stable equilibrium for longer than you'd expect (just look at sharks!). If we slide into stable dystopia now, my guess is that there will be a black swan at some point that shakes us out of it and continues evolution, but we could still be in for 50 years of suffering.
> but we could still be in for 50 years of suffering.
I mean if you are talking about USA itself falling into dystopic metastability in such a situation, maybe, but even so I think it misses some nuance. I don't see every other country following USA into oblivion, and also I don't see the USA bending the knee to techno-kings and in the process giving up real influence for some bet on total influence.
The only mechanism I see for reaching complete stability (or at least metastability) in that situation is idiocracy / idiotic authoritarianism, i.e. Trump/his minions actually grabbing power for decades and/or complete corruption of USA institutions.
My maximum is that the courts restrain Trump enough that we still have at least the shell of a democracy after he's gone. But he blazed the trail, and in 20 or 30 years someone will walk it better, having done a better job of neutralizing or politicizing or perhaps deligitimizing the courts first. Then it's game over.