Going by the letter of many of the dumb NCAA rules, then yes, many teams cheat. But in terms of doing things to gain a competitive advantage I don’t think they do. Many of the NCAA violations on schools are for things that have nothing to do with getting them better players.
We will just disagree on this.
I do agree with the dumb NCAA rules part, but Stanford football, for example, was a "major violation" of more than $3,000 in impermissible benefits to a football player. Stanford did self-report, and the NCAA found no lack of institutional control, but I believe if it happened at Stanford, it can happen anywhere and almost universally does. The problem is there are so many violations, big and small, that the NCAA cannot catch them all. Stanford, for example, may have gone unnoticed if they did not self-report.
Last month the NCAA found evidence of "severe" recruiting violations in the Georgia Tech basketball program. Georgia Tech has yet to respond, and so I will not jump to conclusions, except to say the NCAA rarely serves notice of allegations they cannot prove. This is not the 1st rodeo for Tech, but most people would not think of them as a rogue school and yet they face possible sanctions.
That said, I am sure we both hope Penn State is not in the NCAA crosshairs.