Two things to add:
1: Wisconsin has a bit of a history of subsidizing ambitious projects with poor odds, the DeltaHawk diesel aero engine company being one example.
2: In the US, these projects often rely heavily on "tax increment financing," in which the subsidy comes in the form of reduced property tax rates. The remainder, if any, is often a loan.
If Foxconn builds a factory on low-value land, then even a reduced tax rate might still produce more revenue than the site did before the factory was built. If there are loans, they'll probably be similar to what Tesla received.
Biting the hand that feeds IT
