Yeah enrollment, endowment, and "athletic support" (for a lack of a better term) from boosters, the AD, just overall emphasis by the university -- create the floor/ceiling imho. Then the coach drives the program success around that.I could completely buy into that. Their complete change in game philosophy is going to play a huge factor in how well they can recruit and the level of success they have.
I would put the odds of Texas actually finding their place in the top 4 (Bama, Georgia, LSU) rotation far above OU. LSU is going to be a big force. Texas A&M needs a coaching change but could also factor into that layer between the top 4 and OU.
The 4 you list (plus A&M, Florida, and probably Tennessee) all have more of that than OU. They would be on the next tier with Arky and Auburn. But with the right coach running the program, they CAN get to the top. Just tougher for them. They are going to get an idea of what it is like to be Iowa State, starting the race 50 meters behind everyone else.