Jesse asks which Big 12 schools would leave for the Pac-12. All of them would as long as Oregon and Washington are still there. So the Pac-12 schools could select which ones they feel fit best.

From https://theathletic.com/3405036/2022/07/06/oregon-washington-big-ten-staples-big-12-pac-12/

I don't think that's necessarily true, but the massive variety and differences in reports from well-connected folks makes me cautious about thinking ANYTHING is too cast in concrete.

In one paragraph he says every Big 12 team would want to join the PAC12.

In the next he talks about the PAC12 and ACC potentially pooling media rights.

And the paragraph after is about the Big 12 poaching PAC12 teams (to include Oregon and Washington).

Bottom line, I think there's still a ton of potential options and we don't really know which is happening.  We've yoyoed between "The Big 12 will pick off their favorites from the PAC" to "The PAC is likely staying together" and now back to the Big 12 having the upper hand.  My guess is we'll yoyo a few more times before all this ends