It's the sad truth that greed is the largest part of it, which enables the oligarchs to buy the politicians in the first place. Then if some rare person does resist, there are a whole slew of tools to use against them to force compliance, usually in the realm of blackmail (this is what Epstein was). These tools grow even more powerful as the surveillance engine is expanded (and the truism to remember is that surveillance is about control, not security). lookup Thomas Drake and William Binney to find out what happens to people on the inside who actually care about security and not control.
Top down compromise of a centralized system makes the system increasingly trivial to control as the compromise progresses.