Illinois should pay them to leave...the country.
I lived there, but I got out before the wealth had declined to the point where the rot became obvious. I took my high-tech skills and good job with me, too - I was never replaced.
I’ll be glad to move back, but I’d like some tax breaks. For example, to be taxed for income, sales, and state/local property taxes no higher than the lowest 25% of the rest of the states, for as long as I live there. Otherwise, they can sit and spin.