I think that under-estimates the following of Providence and Marquette. Those are great college towns. There's a UWM presence in Milwaukee, but Marquette does extremely well.
Villanova doesn't compete with Temple, Penn State, St. Joe's, La Salle, Drexel, etc in Philly. They dominate those guys in terms of Philly Phan Phollowing. They're behind the 76ers and Flyers, but well ahead of Temple, SJU, etc.
Also, in Dayton and Cincinnati, no one cares about Ohio State basketball.
Actually I said that Marquette commands the Milwaukee market, and that is a VERY nice market to have, which is why the BE snapped it up ahead of St. Louis and Charlotte.
Nova dominates the market now, but that does tend to ebb and flow depending on success. For a long time, Temple squashed Nova in terms of support, but with their slide and Nova's recent runs, they have the upper hand, however if Temple can keep rebuilding, they can challenge that market.
And as far as OSU and Cincy/Dayton, you'd be surprised how many OSU hoops fans there are there, this I can tell you from personal experience.