The tendency to swing back and forth between ideologies was for a long time a superpower of democracies. No person was in power long enough to ruin it, that property was reserved for autocracies.
Now, at the end of American democracy, this once again proves to be the case.
or, alternatively, at this time in history, technological progress happens so quick that even a few years of democratic instability while an autocracy happens to be stable, are enough to change the power in the world anyway,
The tendency to swing back and forth between ideologies was for a long time a superpower of democracies. No person was in power long enough to ruin it, that property was reserved for autocracies.