When things get bad, they never create a revolutionary change for the good.
What happens here is that things get bad enough that we are forced to try to recover from a catastrophe and never reach or surpass our original starting point. (Just ask the Russians. 103 years of varying degrees of bad since the Bolshevik revolution and still going strong.)
It happened with Reagan, who did so much to hurt the working class and enrich corporations. Even with eight years of economic growth under Clinton, the country never fully recovered.
But the next generation didn’t know how this country was before Reagan, so they thought things were good enough that it didn’t matter whether Bush or Gore won. That made the race close enough so the votes cast for the Green Party cost the Democrats the election.
As a result, we got eight years of Bush and things got even worse than the worst of the Reagan years. With Obama, we had a jobless recovery, and never recovered to the end of the point we reached at the end of Clinton’s administration.
In 2016, some of the Bernie Bros made the same mistake, allowing Trump to steal another election.
And after four years of hell under Agent Orange, there are still low-information and independent voters that haven’t seen enough to know he must be beaten, along with people who think that things have to get worse in order to teach us a lesson.
The lessons of history are all available online.