I'm not saying it's not trending to what you say, but from what we've seen (a&m), it's not something anyone can just do. To paraphrase Tony Montana, "First, you gotta have the money, then you get the power".
So, not too many schools can raise that kind of money for a prolong period of time (3-4 years?). Then you need the coaches that can handle the kids and keep them in line. Then you have to bring the whole team together and win. We've seen that Jimbo couldn't do it at atm. How many coaches could? I'm betting less than a handful. Maybe Saban could have done it, but we'll never know now.
Is it possible? Sure. But I think what we saw at a&m would be the norm if others tried to do it.