Fundamentally, all power comes from other people. A king with no subjects is just another man. Same for a CEO who has no employees and no money. Power is just a term that refers to your ability to make other people work for you. Similarly, money is just a token that can be traded for goods and services under the presumption it'll still be worth something when the recipient uses it.

So if the proletariat are desperate and pissed enough, all that power and money quickly disappear and become worthless, respectively, because there's not enough people willing to obey those orders or take that currency.