They would already be gone. Much more for Yewtah.
2 isn’t happening because they are going to loose 2 and maybe 4 schools if they aren’t near the Big 12 in $ on their “deal”
3 isn’t happening because after the B1G and SEC take what they want from the ACC the 4 that are left will join the Big 12 as their next best option rather than join the PAC 12. Power 5 programs aren't lining up to join the PAC 12.
4 may only happen if Utah hasn’t offended enough of the presidents and ADs, but they are trying their hardest