It's not a matter of would the school accept. Of course they would if the alternative is big12 - the shame avoidance alone alone is worth an annual loss of 4 or 5 million.
ESPN and FOX have no reason to offer, though. None. They don't need to "lock them up." There is no other alternative for those two schools, now or 10 years from now. There's no reason to overpay now when you know UO HAS to go to you whenever you beckon. The same holds true from UW/UOs point of view: there's no reason to take a diminished cut to join now, with a partial payout, if you know there is no option other than joining BIG in '32/33 at a full share.
Msst, Miss, SC, Rutgers, Nwestern, Maryland, Illinois, Texas a&m, Vanderbilt... SEC/BIG will eventually get rid of them all. If you're not a brand, you're not Tier 1. TV speaks, and Vandy and their whistling fuck-sticks are gone...at some point the decision will be made to get rid of the hangers on...everywhere. I suspect in 203? Even in the SEC. Then there are tons of spots for qualified programs.