College basketball today is entirely different than it was 30 and 40 years ago. You ever stop and think that's why Purdue has been the most chronically underachieving team in the country up until this year in that same time frame? And it took a 7'4 giant from Canada of all places to buck that trend.
This is a simplistic take, to say the least.
They were one very unlikely play away from the FF in '19 v. VA, who ended up winning the NC. Their centers that year were Haarms and Trevion Williams. Other than that, they've generally lost because of choking, injury, or other circumstances. They lost with the Big Dog and C. Martin when they probably had the best team in the country. They never won it with Hummel, Johnson et al possibly because of Hummel's injury. The '69 Mount/Keller/Gillium team lost in the FF to a great UCLA team. Once they started losing there was a psychological block there you could literally feel. Edey was so good this year he was able to knock down that wall, at least for this year.