I still don't understand where or how this "fleecing" is supposedly taking place.
The Bears bought the land with their own money, and are (were) willing to build the stadium without any public money. All the Bears asked for was that the state/county/town(s) address the infrastructure issues (which seems very reasonable as I'm unaware of businesses being forced to pay for roads, sewage, etc. that may be needed to accommodate added traffic from business being brought somehwere), and for reasonable property tax certainty.
Regarding the taxes, the only thing that the state/county are "giving away" is revenue from taxes they may levy--that is, a hypothetial tax revenue that does NOT exist, at least not until the Bears build the stadium, and which will never materialize without the Bears building the stadium and other facilities there, and the Bears were not even asking for tax free arrangement; they merely asking for reasonable taxes. Keep in mind here that when the Bears bought the land (track and all) in AH, the property tax was a mere $3M (and that, for comparison sake, only 4 NFL pay property tax, and the highest property tax being paid by an NFL team right now is that paid by the LA Rams, and it's mere $14M/yr). In other words, Illinois politicans gave up $400M in guranateed tax revenue, so that they won't give up $1B in hypthical tax revenue that they have levied.
Oh, and before you repeat your claim (point c), good luck finding someone or something that can use that land in "more economically beneficial way" to bring anywhere near the tax revenue (the "reduced" property tax and all the sales taxes from the games and other activities that the Bears were going generate) the Bears were going to generate. I've lived near that area, and there's nothing about that area that will attract anything in the caliber of an NFL team and related facilities.