GOR has nothing to do with ESPN. GOR is a conference agreement that helps negotiate with ESPN.With the shortened GOR, ESPN is heavily involved. It isn't to ESPN's benefit to shorten the GOR getting the ACC schools on the cheap for the main tv deal. With the tv distributors refusing to pay for the in-market rates for the whole state for these conference networks, the economics for the ACCN drastically change. ESPN probably sees the ACCN as a money pit so they are agreeable to shorten the GOR and dump the ACCN at the end. This stops the lawsuits and keeps FSU and Clemson in the fold until 2029-31. Those years will be when the Big 10, Big 12, and now ACC contracts come up.
Also, the ACCN has grown in revenue since its inception and is being paid for with a lower payout. Not really affecting ESPN. They got a pretty sweet deal on it.