There is a lot of talk on this board about BYU chasing off the Big 12. However I think BYU can be excused when you consider that the Big 12 let Louisville dangle and eventually go to the ACC. Louisville not being invited by the Big 12 is exhibit A that most likely the Big 12's biggest obstacle to survival is the Big 12.
Nobody knows for sure what's going on in that conference. Letting 4 schools get away while adding a zero sum TCU and WVU out on an island makes me question the integrity of that conference. I don't think BYU is the problem.