Nations largest athletic budget and over $20MM in NIL contributions goes a long way way toward keeping the best players at home, not to mention picking up 3-4 of the top portal players available. Don't get me wrong, I'd want OU to do the same thing if they had the means to do so, but unfortunately that'll never be the case unless Elon Musk becomes a Sooner fan lol. 3 out of the 4 teams in this year's 4 team semi-final round had the highest financial backing of all teams. With uncapped free-agency, buying championship teams is going to be limited to a handful of colleges with donor bases capable of spending that kind of cash. OSU, UT, ND are perfect examples of huge schools with large donor bases willing to do exactly that.
I don't think there's another school out there that could have run the gauntlet that tOSU had to go through for the playoff rounds. They didn't have any outright easy games, so tOSU still had to earn it the hard way on the field and they had the ponies to do it.