In Nebraska, which has had a lottery since 1993, hospitality executives and critics of sports betting had accepted that the state would cede some hoops-related dollars to Iowa. But some of them were still hesitant about bringing gambling across the Missouri River.

“It’s certainly very attractive to state legislatures to say, ‘We can tax this and we can get some money,’ but sometimes they don’t always count the bankruptcies and the social costs of gambling,” said Tom Osborne, the Republican former congressman who led Nebraska’s football team for 25 seasons and who has long opposed gambling in his home state.

Osborne also suggested that sports betting would undercut the culture of college athletics.

“It really detracts from the overall appreciation of the game, for the game itself,” he said.

Now, there are no games to appreciate at all. Along with losing the tournament, Omaha also lost the College World Series, which the city was again poised to host this year.

A spokeswoman declined to make Mowad available for an interview in the wake of the N.C.A.A.’s decision and the shutdowns of casinos. In a statement on its website, Caesars said it would “work with local officials to establish a reopening date as soon as it is appropriate to do so.”

And the N.C.A.A., which has long resisted gambling and continues to bar many people connected to college athletics from sports wagering, will have to wait another year to see how an expansion of betting will affect its signature event.

N.C.A.A. officials expected many states to pursue legalized sports gambling after the Supreme Court’s ruling, but some officials were surprised by the speed with which governments approved new laws and regulations. Fourteen states allow some form of sports betting, while another six are setting it up, according to Legal Sports Report.