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.