Where will the extra money come from? The Vike’s stadium seats just 16,055 more than the Gopher’s. If the extra tickets sold for an average of $100 more, that’s only $1.6 million more revenue, and they won’t get a cut of the concessions or parking. Plus Wisconsin might want a cut too, and then add rent, probably $500,000 or so.
I doubt there will be more TV money available, because the network makes money on viewers and adds, not butts in the seats.
For a regular season game, I am not sure there would be any "extra money", which is why I said "money works" meaning to at least break even.
Specifically with the Gophers not getting a concession cut, that's not necessary true at all. They certainly could negotiate a slice as part of the entire agreement including the rent, just as they did with the played in the HHH Dome.
I do wonder how last years Iowa game impacted concession sales. My first beer got slushy pretty quickly, so I gave up on that. Hot chocolate sales I am sure were robust.
Parking revenue would take a major hit as well, though the Gophers could encourage fans to park on campus and then shuttle bus/train it over. That would still result in some/substantial lost revenue though.
PROS - Likely more comfortable experience for fans on a late November evening
Potential to sell more tickets
Less University staff needed to stage the game (on a Holiday)
CON - Upset fans that want on campus experience
Less of a home field (though they have only beat the Badgers once the Bank)
More Badger or Hawkeye fans
Less parking revenue
Less concession revenue (potentially)
Conflict with Prep Bowl
Regardless, I would guess the Gophers Athletic Dept will be taking notes as to how it works out for the Spartans as far as the finances, blow back, positive feedback and the game itself thus can make a better informed decision than any Gopherholer speculation (which is still interesting, IMO).