and also: who is paying you the most cash under the table
Yep. For years Saban was the bagman. And while Alabama puts a lot of money into their football team, they can't hold a candle to Texas oil money. Especially because Alabama alumni aren't rich by any means.
Now that cash payments are legal, you'll see more players going to schools that are not football powers. That's how Coach Prime was able to flip two recruits that were all but locks to go to Florida State and Miami and get them to attend a Division 1-AA school. Imagine if a group of doctors, lawyers or CEOs that went to Stanford or Harvard decided to become football boosters.