The resurgent claim that the modern economy was built on slavery is yet another attempt to attack capitalism while also claiming "we are all to blame" for slavery. The slave owners of old tried a very similar tactic.
In 1986, eight governors threatened to veto deployments of state troops to Central America. Washington generals and politicians responded by further destroying state independence and the Second Amendment's militia clause.
When colleges or hospitals are guaranteed payment by a third party, such as Sallie Mae or a health insurance company, it's only natural to raise prices on the student or patient. In these cases, the user's ability to pay becomes almost irrelevant.