Sure builds a lot of trust.
Actually, I think UO/UW are a lot smarter than that. I think they are asking for unequal revenue sharing specifically because it will destabilize the PAC. They know their recruiting is going to suffer without the SoCal market. They know they are going to get left behind financially. They know their TV package is going to be horrific. They know the B1G is waiting for the Big12 to make a move. So, why not nudge things along a little bit? Demand unequal revenue sharing...UU isn't going anywhere; their identity is completely tied to the PAC. But, CU (pushed by Coach Prime) will balk, as will UA.
The minute one or both of those schools say "Bu Bye PAC; Hello Big12!", the B1G will swoop in and take UO/UW and the PAC (as an A5 conference) is history.
As for the Big12, I could really be satisfied with adding UA/CU and then sitting on things until the B1G and SEC decimate the ACC.