But it's more likely the other way around if the big 12 wants to expand more. I don't think big 12 poached pac but pac definitely isn't better. They have a couple big name teams but those change throughout different eras of college football and we're at a changing point now.
The money might be better in the pac but the TV itself as a viewer is not. Which is what helps the big 12 as far as opportunity to become a top team in CFB. I'm not sure the next tv contract will be better in the pac than big12 anyways.