Double the number of large quality state universities.
Re-index public university tuition to what they were in 2000 + inflation. Mandate that funding comes with X number increase in tenured professors.
Re-instate public funding for state universities to what it was in 2000 + inflation.
A supply/demand imbalance is in effect, and bloat has taken hold on top of that.
Yes building new 20k student universities takes time, but in 20 years these problems will be solved.