Institutions of higher education have always been susceptible to becoming festering boils of personal malfeasance. Take MSU (Nasser) and PSU, for example. Institutions that wall themselves off from anti-septic of public sunshine, responsible board governance (independence), and other mechanisms of accountability are at risk. I was troubled by the Obama era guideline that universities handle investigations of campus sexual assault on their own. I would not trust any institution to investigate itself.
So a guy like Meyer can get away with all sorts of unethical, distasteful, almost-illegal behaviors while coaching in college. The NFL has learned, mostly the hard way, that it cannot cloak itself in institutional secrecy. The laundry will get aired. So risky guys like Meyer never last long.