Only Delaware and Nevada have current betting on sports and Delaware only allows parlay betting on the NFL. Nevada stands to lose not just the hundreds of millions on betting itself, but the hotel fees, food, shows, etc. Not to mention all the support businesses in the area. Even right now all those who lost on this game can demand their money back.
New York just cut a deal last year to allow DraftKings and FanDuel to operate in the state. For all its flaws as a leftist state, New York keeps an industry like this with enormous exposure to potential financial shenanigans under very close scrutiny.