They are not making that type of money. You are usually an ok poster, but when it comes to this stuff, you live somewhere with unicorns. Just because some KSU or BU fan's podcast on YouTube projects this, it is not a projection from the networks. You use the OSU/BU game rating as a marker. That was solely based on hype ESPN was using to push the upcoming playoff games. It doesn't reflect the attention either team draws nationally.
The Big 12 has a population footprint at least half the size of everyone's else. That is why the Big 12 relied heavily on National appeal, but no one wanted to schedule better games. Yet, they had no problem letting Texas and eventually OU do all the heavy work.
But now as a conference that needed all the National attention they could pull, they lost the two horses that pulled it. And with it, they lost the Texas population as numbers. The reason they rushed and expanded with the ones they did is because they know it is bad. They grabbed Houston trying to salvo somewhat of an interest in Texas. BYU is the closest to a P5 school out there. UFC, recognizable name in a big state. Same with Cincy. They are desperately trying to grow the footprint for hopefully a networks soon. They HAVE to have it because without it, they are DOOMED. This is NOT going to get them there. Not even close....
If they make half the money the other P5s make that does nothing to compete, but the other leagues have networks that are starting to distribute insane money on top of the media numbers. It is done for the Big 12. It is just a matter of time...