I really don't see conferences going to like 24 teams and I also don't see the ACC imploding.
I don't see how the financials work for a 24 team type conference. B10 could have had any teams they wanted from the PAC and B12 due to their expiring contracts. They only took 2. OR and WA basically begged them to take them and they said no - and that was with no money issues to have to resolve. They are getting close to the point where adding more schools is dilutional towards the TV money.
ESPN actually has a strong reason to keep the ACC together. It gets more programming for both college football and college basketball from the ACC than any other conference. Do you think they want to have that dissolved and potentially negatively impact their content stream?
GT will never end up in the SEC. SEC would have zero interest in GT - it doesn't bring anything to the table that they care about. Also, the academic side of the school would never agree to being put in the same conference with those schools, and whether you like it or not, the academic side brings in exponentially more money to the school than the athletic side does and therefore has a much more important voice.
Finally, while someone may eventually try to break the GOR, the idea that it will be easy to do is an internet fallacy. No one has tried to break a GOR yet. Also, if the ACC's GOR is written like the B12's (which is pretty likely) then a school that wanted to depart actually would have no say in the dissolution of a conference. That GOR specifies interested vs non-interested parties and if a school attempts to leave they are automatically categorized as a non-interested party and lose their vote on any conference matters.
I think there will eventually be more movement, but probably not for a few years (which is probably to GT's advantage). B10's new media contracts expire at the end of the decade so that seems like a pretty good timeframe to keep in mind. Also, if the new CFP process includes auto bids for conferences that actually makes it potentially less likely for a school to leave as they would be leaving from a conference where it may be easier to make the CFP to go to the conference where it would be harder. Would you rather have more money, or an easier path?