That's just it.
Let's assume that Ohio State, Michigan, Oregon, Penn State and SC are 'Yes' votes on unequal sharing. It takes 11 votes in the room to get it done (super majority). There aren't another 6 votes out there.
The biggest issue is if they figure out something else to hold over their heads.
Similar to what FSU did, you vote for it or we pack up and leave and you will get peanuts.
I think that will be the first iteration of the super conference model to really appear.
Not so much that they want or expect it to happen, but the top dogs in the SEC and B1G could threaten to jump ship to create their own blue blood conference for way more money. If the middle of the pack teams in those conferences believe it could happen they may vote for unequal revenue knowing they would still get more that way than without the bluebloods.
This could be nothing more than a bluff but at that point no one knows.
OR
Here is the other thing. If during a new media deal, the majority would get at least the same amount or a small increase, while the top teams get a bigger increase then they may agree to it.
Say everyone is getting 100M in the B10 at the time of the new contract.
With unequal revenue the lowest teams would get 80-100M. The middle teams would get 110-120M and top teams would get 130-140.
What that does is give majority of teams the same or a small increase. Just that the top teams would get a larger increase. This would be the easiest way to enact it, and once its enacted its hard to put it back in the bottle so to speak.
I dont know how likely I see it happening but I would not give it a zero percent chance. I believe the B10 and SEC will have some form of unequal revenue in the next contract. That may only be playoff/NCAA money to start, but once it gets started it could very well just be the start.
That being said a lot of things change. Look how much its changed in the last 20 years. And the next 20 I am sure will change just as much.