Lexicus
Deity
@Lexicus has always been better able to explain why the government doesn't really need taxes or money for its power than me, and George Orwell did a pretty good job explaining the psychology of power.
It's less that the government doesn't need taxes or money, than that taxes and money are devices by which governments compel people to obey them. They are a manifestation or consequence of a state's rule over territories and people.
Slavery folds as soon as things get complicated...
It just gets more sophisticated. There are methods of control considerably more advanced than the whip.