it's tough to trace the money trail. What you are seeing now is that the coaches and schools are not providing the money. But people and companies outside of the schools are providing the money, and the coaches are aware of it, but do nothing to stop it. I don't believe Coaches are guilty of providing money. But I also don't believe they don't know who is.
My son is a college athlete. Many Div 2 coaches informed him that they could get him the financial aid he needed to attend their college rather than a sports scholarship. I personally informed those coaches, no thank you, because we do not qualify for financial aid. We accepted an academic scholarship instead where he had to maintain a certain GPA to keep it. And his current coaches and academic advisors have kept him "on track" .