This is the best article I’ve seen yet to understand this:
www.johncanzano.com
“Thompson said the Big Ten’s decision to add two Los Angeles-based universities was rooted in a simple math equation. The 14 existing conference members know they’ll receive approximately $71.4 million per university under the new Fox deal. Adding two more partners only made sense if they could generate a minimum of $143 million in additional distributable revenue.”
So that’s where we’re at. A school needs to be worth $70M+ Per year in tv revenue to be worth adding.
There are only a handful of schools out there that can do that at this point.
Hardly any really.
The Big Ten and SEC may add a few more each but there simply aren’t enough valuable schools out there for either of them to get to 20.
This will stop at 18 or 20.

Canzano: Pac-12 gut punch comes with a cost
Ex-Fox Sports Network executive weighs in; could Oregon-Washington be next for Big Ten?

“Thompson said the Big Ten’s decision to add two Los Angeles-based universities was rooted in a simple math equation. The 14 existing conference members know they’ll receive approximately $71.4 million per university under the new Fox deal. Adding two more partners only made sense if they could generate a minimum of $143 million in additional distributable revenue.”
So that’s where we’re at. A school needs to be worth $70M+ Per year in tv revenue to be worth adding.
There are only a handful of schools out there that can do that at this point.
Hardly any really.
The Big Ten and SEC may add a few more each but there simply aren’t enough valuable schools out there for either of them to get to 20.
This will stop at 18 or 20.