This is just after a ( false) DESOLATION nobody has any money.
They definitely aren’t spending it on the very thing they fought to destroy
Even if they feel guilty they would only pay if they work and even that wouldn’t last long
Maybe it started as equal work equal pay
But later society forgot and then they saw a bunch of ppl doing nothing and cant think for themselves
What else would you do but enslave them?
It may be horrible but that is a society ‘never throw out a useful tool’