I don't see it going away anytime soon. Millionaire boosters get to pretend to be sport owners without the multi-billion dollar price tag.
It will only go away when booster fatigue settles in, but even then maybe a school like Indiana will see someone like Cuban slowdown on his spending, but there is probably another booster worth 100s of millions at some other school that will take his place. Some schools like Alabama, OSU, or Notre Dame have such a large fanbase that they will always be able to attract the corporate dollars to fund the program.
If you see anything it will probably be the ~50 schools with the means break away from the rest and form their own league. You're kind of already seeing it with the B1G and SEC raiding the best teams from the former PAC-12 and Big 12.