So, the ACC is set for the next 20 years. They extended the grant of rights to 20 years, and ESPN will start a ACC network, to start web broadcasting soon, and be a formal channel by 2019.
ACC, ESPN agree to 20-year rights deal that will lead to 2019 launch of ACC Network
So, the only way the ACC gets raided is if they agree to dissolve the league, don't think that's going to happen.. And Notre Dame has joined the ACC in everything but football, and MUST join them if they join a conference. So, looks like things are set on the east coast.