You have seen the comings and goings now of Trumpism, Brazilianism, and Brexism, 2016 to 2024 and the common theme is why they failed to persist in power ONCE THEY CAME TO POWER. You have seen the direction that exism movements take towards permanent authoritarianism. And you may be familiar with the environment in countries with permanent authoritarianism.
If you look at the evolution of democracy theory since 2016 paradigm shift from normal to extreme liberal democracies in some countries you and you adjusted your previous democratic thinking as now EFFECTIVE TARGETED CHAOS and THE NATURE OF THE COURT SYSTEM IN A CONJUNCTURAL CAUSALITY MODE play a key role. And you compare this environment to the one found in countries UNDER permanent authoritarianism you may see some similarities in terms of necessary and sufficient conditions for them to keep power for ever between the structure of permanent authoritarianism from within and well as from outside.
If you take into account this, then you may be able to see that the necessary and sufficient conditions for permanent authoritarianism to stay in power for ever using this new thinking has technically not changed, it is the same before 2016 and it is now in 2024..
And this raises the question: What is the necessary and sufficient condition for permanent dictatorships to remain in power regardless of opposing democratic movements?
What do you think the necessary and sufficient condition is?
Note: The answer is short.