Conspiracy theory (Sorry, this is what happens when you need a football fix):
1) PAC needs any and all assistance in justifying their existence beyond USC football and UCLA hoops, otherwise, they are essentially a G5 school with a P5 moniker.
2) The SEC and B1G feel really threatened by the ACC (yes, Clemson is the driving force, but with a relatively young Dabo, their run could go on for a long while); SU is back under Dino, who gives no appearance of wanting to or needing to leave to reach the highest plateaus; FSU wants a winner, will change coaches as necessary to get back to contention; likewise Miami, and the ACC top to bottom is much deeper than in decades past.
3) The ACCN is coming on line and the SEC and B1G want to diminish the launch as much as possible to hold onto any financial advantage they have, especially following the B1G renewal which proves there is far more money in hoops than the networks were letting on the past couple decades and no conference matches up well year in and year out in hoops like the ACC.
4) Nick Saban has threatened the NCAA to take Bama to the NFL because SU and TAMU are the only teams that can compete with Clemson.
I need a real game soon. Too much time on my hands.