What I read was that the reason for in-state college tuition increasing so much was because of the reduction in property taxes.
Typically property taxes go towards education at the local level, and as property taxes were reduced there would be a shortfall in the budget somewhere. This typically fell on education, which then forced colleges to start raising tuition as there is still a non-zero cost to education.
There was a "print" article about this in the 70's or 80's in a local newspaper in California urging residents to vote NO on lowering property taxes citing the increase in future college education as the main reason. But the vote went through, property taxes were slashed, and then of course ten years later and so forth, tuition had sky rocketed.
Decreasing taxes is like debt. Once you are hooked on it it's hard to go back. Hard to imagine any real states or large communities raising property taxes significantly to actually reinvest in the local community.