A second theme around the MillerCoors decision were claims that higher taxes might help create a good business environment because they pay for things that businesses like. Paul Soglin, without reference to authority, suggests that a good business environment is defined by the Green Party platform. The blogger known as capper suggests that the decision must have had something to do with Chicago's "high quality mass transit system, that includes a rail component .... "
The latter is wishful thinking. MillerCoors is locating in downtown Chicago and, although they said nothing about it, might be concerned about how easy it is to get in and out of downtown Chicago - no matter how one does it. Rail or not, Milwaukee would have won on that factor. As for O'Hare (which it did mention), Chicago has better air service than Milwaukee because it is the third largest city in American and located smack dab on the middle of the country.
Soglin has less than a third of a point. It is certainly possible that a skilled workforce - which may well be related to public education - is important for business. It may also be the case that infrastructure matters. This is distinct, however, from satisfaction of the demands of WEAC and public employee unions. I rather doubt that greater progressivity of the tax code, a high minimum wage, tougher than national environmental regulations(Wisconsin's DNR is not so popular with business people), government spending on childcare, etc., are likely to be positive factors. While quality of life is important, I don't know what many people equate that with the general level of state spending.