Madison is a college town, the basketball and football teams are well supported, i think it would hard to add a minor league baseball team to the mix. While its different times of the year, there is only so much disposable income in a town that can be used towards sports. Des Moines' only D1 school is drake, so the cities disposable income can go for baseball. Many people from Madison drive down to Milwaukee to go to brewers games. When teams are added to a city, it has an affect on the arts and all other teams in that city. That being said, a AAA team in Madison would be awesome, but I understand why it makes little sense for the brewers or the city of Madison to do it.