I disagree.
This article is helpful on part of why it shouldn't be surprising the bears screwed up a lot:
https://www.windycitygridiron.com/chicago-bears-rumors/110905/chicago-bears-rumors-stadium-chatter-from-super-bowl-week
The original sin that set things back was the bears purchasing Arlington Race Track without securing tax certainty before hand. They just bought it, when any others would have arranged for the gradual changes through build phase.
That meant their first fight wasn't 'get illinois on board for infrastructure', it was 'pit chicago and AH against each other' to get the certainty back. Except IL is also the one that would be providing the funding, and yeah, 'hey we want even more funding to move a chicago thing to different chicago place' isn't the best IL state politics.
They work that out and then want the state to go when the bears snap, and it didn't happen.
Let's also talk about why there are a lot better incentives for IN to be aggressive vs IL.
There is no credible case that this would actually bring numerous IL jobs outside of the short construction burst. It's moving sales tax and other spend from what municipality to another, but still in the same county. MAYBE it brings more bears fans from milwaukee down.
But for Indiana, it would bring a bunch of spending that would normally occur across the border into IN.
Now, IL does have to face losing the game day revenue and 'entertainment district' of AH, and that is worth the spur of activity. But it's still a place that largely will fill in with some other activity. Wolf Lake isn't going to fill in with anything like it.
So yeah, it would be great if the Ted and George weren't idiots, and then IL politicians jumped when the bears asked.
But it's also just extremely sleazy to me, the family that the city had to constantly create playing spaces for because they were idiots and talentless, threatening to leave a lease 10 years early for a different state if their fans didn't lace their pockets even more.