I don't have any qualms with the state-level tax revenue. They will make bank on the income taxes and sales tax. The state actually has something to lose if the Brewers leave.
My issue is at the local level.
The Brewers don't pay property taxes on 265 acres of land. Per one estimate:
You could put literally anything else there other than a church and it would generate tax revenue for the city. The property tax exemption wouldn't be so bad if the city didn't also have to contribute to the maintenance. IMO, they already are contributing and then some.
Article in the NYT today says there are 100,000 fewer apartments since the 50's most of which disappeared in the 90's when people bought out the apartment(s) next door and expanded.
I think it could be debated how much of the development on 43rd street is due to County Stadium/Miller Park. I believe all the developments around Fiserv were built by the group that own the Bucks so the correlation is a bit easier to make.
The thing I find funny is how often people complain about government waste but are perfectly fine when the government hands out money to a company that doesn't need it because "that's just how it goes". At the end of the day, fans don't really care about economic impact. They only care if the team sticks around.
I can be a fan of the Brewers and still think there are other things that need the money more than they do. Does that make me slightly less of a fan? I guess so. I'm ok with that.
I don't know this is the same everywhere but in Milwaukee the number of owner occupied homes has gone down quite a bit the last 20 years or so. That's a combination of speculators coming in and buying up a lot of properties to rent out plus some vacation rental (eg Air BnB).
If Attanasio were to sell the team, they would more than likely cut the payroll down quite a bit. Selig did it after they built Miller Park.
They sold after the 2004 season.
(Obviously, that's a big "if")
One super slim silver lining is that they figured this out now as opposed to 5 days into spring training. At least the front office has some time to develop a plan for the off-season.