The Pac 12 was murdered, and USC, UCLA and the Big Ten are the murderers. None of it was inevitable, none of it "had" to happen.
The actual reality is the difference between Innovative Genius Brett Yormark and History's Biggest Idiot George Klivakoff is that the Big 12 membership accepted that their time at the top was over and the Pac 12 membership didn't.
The public face of the new B1G reality is super gung-ho, problems don't exist, we're still as unified as ever, this is going to work. It would be an embarrassment and pierce that bluster to back down, even for women's field hockey.
But yeah, essentially re-forming the Pac 12 for sports that don't draw attention or money would make life way easier for all parties and should be embraced.
My assumption is Cal and Stanford (and the ACC) are more willing to own up to that here in 2024 whereas the B1G schools will want to play make believe and justify the public-facing imperialism a bit longer. But the happiness and comfort of Cal/Stanford keeping their non-revenue sports local would loom larger as time goes on.
(FWIW, it's entirely possible even Cal/Stanford would refuse this offer currently out of an excess of pride. But the PacX should try.)