Ok, then let's play that out. I assume the 3 conferences are the SEC, Big Ten, and Big 12.
The Big 12 does have a pro rata agreement in place in the ESPN side of the contract that increases their total revenue for any current Power 5 team added, but that only guarantees that their individual revenues won't go down with the additional team... and that's only on the ESPN side of the contract. The Fox side, to my knowledge, doesn't have that provision, so any new team could result in a net loss for the Big 12 if Fox isn't willing to pony up. Even with that provision, the current ACC contract is about the same as the new Big 12 contract, so the Big 12 is not going to be the source of the windfall.
So that leaves the Big Ten and the SEC.
I'll concede Florida State, Clemson, and maybe Miami are potentially 'prizes', but the Big Ten is AAU only (with the exception of Nebraska, who was AAU when they joined) and none of those are, so that leaves the SEC as their primary suitor, but I'm not sure the SEC would want both Florida teams. I think FSU would actually get the nod over Miami.
Then you have 4 or 5 more that could potentially add value, but I don't necessarily see any of them as teams that move the needle.
So, find a home for these guys and tell me that Fox and/or ESPN is going to shell out between $70 and $80 million per year for their inventory of home games. I'll even highlight the ones that are AAU:
Florida State
Clemson
Miami
North Carolina (AAU)
Virginia (AAU)
Virginia Tech
NC State
Georgia Tech (AAU)
Boston College
Pitt (AAU)
Wake Forest
Louisville
Syracuse
Duke (AAU)
There are a few faulty assumptions here, but I’ll play. First off, the Big 12 is certainly going to increase payouts with just about any ACC team (or more accurately, pair of teams or group of teams). The network contract language you mention are just standard protections they have built in to keep conferences from adding marginal teams for the sole purpose of frequent renegotiating leverage. The SEC deal with ESPN had the exact same provisions at the time of the Texas / OU additions, too. But you can bet your *** we are all getting more money when they jump in. The networks will re-up for any added teams that are a net positive. They always do.
Also keep in mind, this is a dissolved conference scenario with 14 teams virtually up for grabs. You’re not going to find any set of 2 to 4 teams from the ACC that don’t bring in substantially more average viewers than schools like UCF, Cincinnati, Houston, Iowa State, Texas Tech, BYU, and Kansas State. That’s over half the league. A third of the league is located in a single state, with none of the 4 teams in that state having any sort of national following. They are a league in desperate need of expansion to heavily populated areas with name brand teams. So I’m not willing to concede at all that the Big 12 doesn’t boost the payout of any existing ACC team (save for maybe Wake Forest).
Moving forward to the Big 10 / AAU thing, it’s really hard to see the Big 10 willfully shutting themselves out of the entire lucrative Florida market due to the AAU deal. Would be incredibly foolish….especially considering that they already have a non-AAU member in a remote location who doesn’t bring much to the table. It could be argued that it would be similarly foolish to shun Clemson for the same reason, but I could understand that one a tad better. Boston College also brings them into the NE market and gives them a monopoly there, but the AAU thing could be a deal breaker there. All the rest of their targets would certainly be the AAU schools.
The way I see it:
FSU and Miami could each potentially name their destination, but couldn’t go to the same league.
Big 10 would prioritize UVA, Ga Tech, UNC, and should definitely take Miami or FSU if they can get over the AAU thing. Might take Clemson or Duke depending how how the dominoes fell above. Syracuse, Pitt, and BC could be break glass in case of emergency options, but not very likely.
SEC would prioritize FSU above all. Take Miami if somehow FSU went to the B1G. Then priorities 2A, 2B, and 2C are whoever they could get in the following: one out of UVA / Va Tech, one out of UNC / NC State, and Clemson. Duke is break glass in case of emergency option - probably only happens if they are a package with UNC.
Big 12 would be tremendous fit for Pitt, Syracuse, BC, and Louisville. Could be landing spot for NC State or Duke if one or both were somehow shunned by both of Big 2 leagues, which I doubt would happen. Possible fit for Wake Forest if they strike out on all the other NC schools. Every team on that list except WF brings way more to the table than every single one of the 4 teams they just added (UH, BYU, Cincy, UCF), so you are looking at a net positive to the Big 12 contract for all teams with any combo of those additions….no question.
ETA: the “everyone gets most of what they want” option….
B1G adds UNC, Duke, Ga Tech, UVA
SEC adds FSU, Clemson, VA Tech, NC State
Miami goes to B1G if they get off their AAU high horse, SEC if B1G somehow lands FSU, Big 12 if neither happens.
Big 12 gets Pitt, BC, Cuse, Louisville
Wake goes maybe to the Big 12 if they miss out on westward options like the 4 corners schools, and also miss on NC State / Duke, or to the AAC if they don’t.