TLDR: after the revolution will have come and gone, you still won't be in charge.

Regime changes, whether forced by outside circumstances or from within a single society, just change one group of elites with another while the middle and lower classes stay mostly the same. Pareto (the originator of this theorem) thinks this is a basic conclusion from the fact that most people won't have the right combination of wealth, connections, intelligence, ambition and luck to take advantage of societal upheaval when opportunities present itself.

China had an emperor surrounded by an impenetrable bureacracy of "elites".

Then they had a communist revolution, overthrew the government, executed all the elites.

Now they have a chairman, surrounded by an impenetrable bureacracy of "elites".

I'm not the biggest fan of CPP, but I have to admit they seems to have improved the life's of most Chinese.

In the past 40-ish years, yes; in the previous 40 years, they inflicted a lot of suffering on the country.

Same for the Russians, I think