To chime in with WestHartHusk, yea, away games are owned by the away school (or conference), not the visiting school. Away games are never part of the visiting school's GOR obligation (unless the home team is a member of the same conference, of course).
For the ACC, all home games are presumably subject to the GOR. Because of this (and the$50M buy-out), suddenly the ACC is a less attractive conference for raiding than is the B12.
For the B12, one home football game (and 7 basketball games) is not subject to the B12 GOR because in the B12 each school continues to own one of its so-called Tier 3 football games. This game, however, is determined by ESPN and is not the choice of the school. If a D4 comes about, and if all games in the D4 must be against other D4 schools, then this B12 Tier 3 football game would likely have some excellent value.
Retaining ownership of the one Tier 3 game is precisely why the B12 came back into the cross-hairs of realignment once the ACC passed its GOR to go along with the prohibitively expensive $50M buy-out. It would appear that the B12 might be the most suspect of the GOR conferences, due to being able to lend a new conference ownership of one home football game and all away games, but again, a high degree of speculation attaches since no one has yet to post the exact language of any conference GOR for analysis.
At least at the higher levels of B12 schools -- the "name state schools"; namely: Texas, Oklahoma, and Kansas -- there may be interest in them by other conferences if they can be had by moving to another conference without default under the B12 GOR, along with continuing to perform under the GOR in the new conference, without future revenue disbursement forfeiture. Tell you what: If I ran the B1G, and if I could nail down the NE corridor by adding UConn, and then move to 18 by adding Texas, Oklahoma, and Kansas, I would darn sure do so in the proverbial New York minute.
Furthermore, if there's a D4, then D4 could easily move for 13 regular season football games prior to the playoff beginning. If the B1G were at 18, and if the ACC faltered at all, then, if the B1G wanted to, it could move to 20 or 24 schools in a 4-pod league, play 9 or 11 conference games (thus racking up conference $), 4 or 2 OOC games, and it wouldn't matter if a school went undefeated, since the idea would be to make the playoffs, not necessarily going undefeated. Talk about raking in the dough, plus you could pretty much hem in the SEC on both its western and eastern flanks.
In the meantime, yea, I know: UConn's a helluva lot more interested in finding a permanent home in one of the P5 conferences, with a whole lot less interest in some grandiose "take over college football" scheme suggested by some anonymous internet poster.