But do the snooty Harvard billionaires like football? I think the finance types probably got sand kicked in their faces by the QB in high school....

Texas Tech and Texas A&M have the oil billionaires that LOVE football....
These points are true, but my school Dartmouth has alot of guys from Texas who played sports, mainly football, and a number of them are billionaires or close. They support their sports at Dartmouth, but not sure they would support NIL. I know NIL funds are necessary now in FBS and the top of FCS, but I just don't see big NIL and pay-to-play as being "right" for sports in general and as being sustainable. I wonder if some of these people would rather fund a building and the pay for the endowment of the head coach, than have to pay up every year for ongoing NIL. I don't step up bigger at UM NIL because of these views. I know a large UM donor, who is a huge sports donor at his wife's school, who don't give to NIL at either school.
And none of the Dartmouth guys I know, would want to hang around Dartmouth football and be on the sidelines. Just not their style, and don't go to lots of games. Not like the ones you point out in Texas.
I wonder about my other school, Stanford. Stanford is now more into NIL than they were. But I wonder how many of the tech billionaires and other rich people are that into sports or football.
And Stanford and certainly the Ivies are more one-way Portal streets. Players depart, but can't get accepted to come. Stanford admits some. The Ivies admit almost no transfers in sports, and mostly only very high end academic transfers who have 2/3 years of school remaining. And, in the Ivies, you can't play sports if you have graduated from undergrad.