The Chicago region is a world leader in data centers:

The Chicago area is tied with Atlanta as the fourth-largest data center market in the world, behind Northern Virginia, Silicon Valley and Singapore, according to a new study by Cushman & Wakefield. The study cites low cost of land, a robust development pipeline and lower power costs than most large data centers as advantages for Chicago.
The study also notes that Chicago-area sites come with “sizable incentives,” a factor that helped bring Facebook/Meta to DeKalb.
In 2019, Illinois created the Data Center Investment Program, offering an exemption from state and local sales and use taxes for companies that invest at least $250 million and create 20 new operational jobs in a data center. The program also requires the data center to be carbon-neutral.
In other words, there is money to be made by putting data centers in the Chicago region.
But, what do data centers offer back to the community? They might sit in buildings that the public does not know are data centers. They may not offer that many jobs; the data center under discussion in DeKalb in the article cited above is a more than 2.3 million square foot facility on 505 acres that will employ 200 people. They are getting tax incentives.
Of course, this is the way the development game is played in the United States. If these deals are not cut, companies will claim they will go elsewhere and they can find more favorable conditions elsewhere. The new data center will end up in Iowa or a “business-friendly climate.” The tech companies are desired by many communities so they will get good offers.
More positively, part of Chicago’s strength over the decades is its position in key infrastructure. The center of important railroad routes. Busy airports. The convergence of commodities from the whole Midwest. The creation of financial instruments. And now data centers.