If the ACC never gets a network off the ground there is literally no value to Boston College in the state they are in today.
They were brought in for the purpose of bringing New England eyeballs to ACC sports. The problem is that without a network that they can push New Englanders to buy subscriptions to, their is no monetary benefit to having BC in the existing TV deal as their athletics have been such a horror show that ESPN isn't giving their games any real exposure, therefore no eyeballs in the New England region.
In the mid-2000s when BC still had halfway decent football and basketball programs you could point to gate #s, bowl/NCAA tournament revenue and decent TV ratings as a reason to keep them around.
But those days are long gone.
I think
@billybud is right and that eventually FSU & Co. are going to get sick of watching BC cash the same paycheck they get while doing absolutely nothing to increase the value of the ACC brand.
Will BC turn it around? Maybe. They have a pretty rabid alumni base who remembers Eagles teams of past who were decent, but the current administration needs to be tossed out first. It's a dire situation right now up there.