How many centuries do you think is an acceptable timeframe to quote people when they want a problem solved? Right now, we're about a century and half out from w

How many centuries do you think is an acceptable timeframe to quote people when they want a problem solved? Right now, we're about a century and half out from when Black Americans were first recognized as people, about 3/4 of a century out from when the last slaves were freed, and less than half a century past living in an overt Apartheid state. If you look at the rich and powerful, the vast majority of them started from a position that was simply impossible for POC at the time. Each generation benefits from the prosperity of the last, giving them a leg up over those without that advantage. Over time, random chance may reduce the resulting advantage to below the noise floor, but how long should those affected be expected to wait? Or maybe we can try to remedy the situation, now, for the living. Overt diversity initiatives try to solve the problem that someone from a marginalized group is likely to be less qualified than their unmarginalized peers because they've had fewer opportunities to become qualified exactly because of that marginalization. If you don't take corrective action, then you just perpetuate the problem. So, if you still are opposed to corrective action: How many centuries is enough?