Chicago has been, and will continue to be, one of the largest tech hubs in the world. We just are not as dominant as we used to be.
(speaking as a former Chicago startup founder)
(speaking as a former Chicago startup founder)
You had some serious engineering here: Western Electric, Teletype, Bell Labs/Lucent, Stewart-Warner, Illinois Tool Works, USRobotics, Admiral Radio, Shure, Abbott Labs, Baxter, Rockola, Seeburg, Williams Electronics, Bally, Zenith, and of course Motorola. Motorola alone seeded lots of other small companies in the area.