I could maybe see one of them happening (Maybe Kansas, Iowa St). P12 one doesn't make sense to me. ACC seems a non-starter with WVU academics being so terrible and not adding a lot of value to the conference. ND seems pretty committed to being independent.
I don't think adding those teams will increase P12 revenue. They could do it as a way to destroy their main competitor for fourth best conference, but things seem more about the money than anything else, right now. Especially with athletic departments coming off perhaps their worse financial years, due to covid.
Would be interesting if there were only 6 teams left of B12 and then they added 4-6 teams to get to 12 and end up getting $280M of payments due to teams exiting the conference.