Huge difference though. Washington State is already in the conference as is Oregon State and the conference isn't going to kick them out.That is something you could say about Washington State when it comes to ADs being in disarray with no relief in sight from their administration due to questionable spending for athletics. Even ASU and Texas' ADs were in disarray under their former ADs. WSU & OSU's fanbases aren't big either but the WSU fanbase is rabid for a small fanbase.
CSU did sell their stadium out for its debut against OSU. WSU, UA, and TT games are the type of games to prove to the Pac-12 and Big 12 that they can draw strong crowds to that stadium. If they can't, it will kill their P5 hopes for a very long time.
In fact as I mentioned before if the conference tried to kick them out there would be some massive political pressure put on Washington and Oregon to use their influence to keep them.
This is the same kind of issue that would be faced trying to split Okie Lite from OU or Kansas State and Kansas. Unless there is simply no choice they are a package deal
Go back a few years and consider when the PAC was expanding to include CU and Utah. There was significant talk about the conference taking Texas and OU. Before anything official even got out the politics were working full speed to try to make sure that Baylor was included (in place of Colorado was their idea) and Baylor isn't even a state school.
If those schools were not already members of the PAC they would likely face a similar set of problems getting into a P5 conference that CSU faces but they don't have to worry about that.