The P12 people are living in denial, much like we were last year, when we were blindsided by OU and UT leaving. The big difference is the people actually care about football in the B12, while most could care less about attending a game in the P12 except for a few places like Oregon. The idea that UCLA may come back to the league is just not happening, and unless the numbers from the networks come back to put the P12 up to around 45 to 50 million a school, then others will be looking to leave also.
No one is going to stand pat and risk being left out when its all said and done, so the 4 corner schools will be looking to jump first and get into the B12, not worth the risk of sticking around and then Oregon, Washington or Stanford jump a year from now, after they have signed away their GOR rights.