I like the line about the 108 year old conference (it's not true).
The reality is the PAC as we know it has only been around since 1959 (I wish Pudge was still around, he'd post an essay on this). The schools that were the Pac Eight (USC, UCLA, Cal, Stanford, Oregon, Oregon St, Washington & Washington St) all left the Pacific Coast Conference together and started the new conference as they no longer wanted to be in a conference with Idaho and Montana (and for whatever reason saw that as a better path than trying to kick the two schools out).
That isn’t why the end of the PCC happened. And Montana had already left in 1950 anyhow.
The PCC disbanded over a major slush fund scandal that touched nearly every school in the league at one point or another (in other words “everyone’s AD was helping its students get paid under the table, everybody in the AD knew about it, and everyone kept it a secret from their own academic administrations because they would rightly throw a fit.”)
Back in the 1950s, the NCAA delegated rules sanctioning authority to the conferences (as opposed to the situation now where the NCAA handles it), and the PCC of the day was a tight ship run pretty much entirely by the “stodgy academic” type, who very much insisted it’s student-athletes were students first, and that they were indeed there to “play school”. These various slush fund scandals led to multiple suspensions of nearly every school in the league by the conference (and snitching on other schools was commonplace), and the petty animosities were boiling over. The most petty among them was the assertion that the smaller rural schools would absolutely weaponize the conference’s stodginess against the bigger city members if it meant that they could break through the big city dominance (the small rural half of the league, Montana, WSU, Oregon, OSU and Idaho, combined for only 9 of the conference football championships during its existence from 1915-1959, or 20 percent; both Cal and USC would win more championships individually than that group of 5 did; this feeling was bolstered by the success of Oregon State as repeating champ in 1956 and 1957, when all the big city schools were under some kind of conference sanction).
They basically couldn’t come to any kind of amicable place by 1959, and the league agreed to disband.
The new league that the big city schools founded, the AAWU, didn’t even want WSU or the Oregons at first. Within five years all three were invited back, but they definitely didn’t want them there in the first place.