From a business standpoint, I don't see the 4 going to B1G. Even at a partial share, the money has to come from somewhere, and no existing team is going to agree to lower their payment by even $1 for the 4 except maybe UCLA since they are still on the hook to cal for some money which may end up a wash if cal gets into B1G.
So the networks would need to pay more. Most notably Fox, which already has the B1G's premiere games locked up. Cbs? Nbc? Maybe more streaming in peacock.
I'm sure the 4(or 2) probably went to the B1G as a group and said take us! We will come over for almost anything! But the money still needs to be gotten from somewhere. Sell a 4th tier? Who is going to pay for that? Apple? Lol.
Maybe ESPN says, B12...we give you more money to secure them, but I doubt it. Fox can probably get them alot cheaper in the B12 as well. Fox would be paying more for them to play in the B1G than they can have them in the B12? That makes no sense for them.
The networks still and do hold all the cards here. At best the conferences can ask for more money, but the networks will decide where teams go ultimately. What real benefit does any network have with paying any of these 4 even a partial share in the B1G when they can bide their time and get them and their inventory cheaper.
If the best the PAC 9 could get is 20m on apple, they probably aren't getting anymore from the networks by dropping asu, Utah, OSU and wsu and going to the B1G. Someone has to pay them and it ain't gonna be the current conference members.