I think we all better realize that the P12 is probably going to go on the offensive. They might very well be discussing which B12 teams they can poach. There will be a west coast league, unless the B10 takes several more from the P12 - there are just too many people who live there. I think the B12 stability is a risk again.
I don't disagree... But, I don't think wash / oregon get left behind. The brands are too valuable.
Oregon had the highest athletic revenue in all of college athletics last year despite the terrible tv money in the pac. They totaled $392M, #2 was tosu at $234M, $160M gap... Normally, oregon is more like top 25 in rev, but jumped to #1 with a big nike contribution. However, they get one of those infusions every ~5yrs or so). It makes too much sense to create a west coast wing to pair with UCLA/USC and lighten the travel requirements. Could be 4 teams could be 6 (wash, ore, cal, stan).
Washington is top 20 in revenue and has better attendance, fan support than most of the pac. After USC and Oregon, I think they are next in line in terms of value (they were #2 before the nike money started rolling in for oregon). UCLA has basketball... but washington is the better football program with more consistent fan support. Washington is consistently ahead of UCLA in ticket revenues including +10M (28M v. 18M) in 2019. UCLA finished #40 in overall revenue, wash was #18. Despite a $20M gap in media/rights revenue driven by the b10 v. pac tv deals, washington still had higher revenue than neb overall.
I obviously have no better idea than anyone else what will ultimately happen. So, if the asu/ari/colo/utah schools believe that they are better staying put that is fine. But I think the writing is on the wall for the pac. I think the tv rights per school are going to be similar for the new B12 and current pac10. So, why are B12 schools going to go to the pac if you are in the B12 footprint? It's one thing to fly all your teams across the country if you are making $100M/yr in tv revenue (UCLA, USC). It's another when you are making $30M - $40M. Also, who are the next teams to get called up by sec/b10? pac membership is less stable than current B12 membership imho. Every team not in the b10, sec will leave if they get an invite (except, for now at least, ND).
I think the pac schools likely listen to the tv rev options in the now pac 10 vs. future Big 12 and decide if they stay in the pac until wash / ore leave or if they leave now. If they decide to leave it likely forces ore, wash to join too (until they ultimately join the b10.
just my take though.