The BIG isn't dumping Maryland or Rutgers any time soon. Too many cable subscriptions. The Big Ten has generally expanded for subscriptions. The SEC has generally expanded for football quality. Missouri was actually good when they went to the SEC.
I was reading something awhile back but both Maryland and Rutgers were really close to the break even line and were projected to be net negatives in the next few years. The B1G DRASTICALLY over valued what the cable companies in the New York and DC areas were willing to pay for BTN.