Don't worry, it's not to just one guy. That would be a bit extreme, even if one were to apply Cheech & Chong standards to the equation.
No, those sales have gone to lots of Illinois residents...and quite a few have gone to our Midwestern neighbors (Wisconsin, we're looking at you).
The Illinois Department of Financial and Professional Regulation (IDFPR) Says 2021 Sales Are Already At A Billion Dollars
According to the numbers posted at the IDFPR website, the lion's share of recreational marijuana purchases at Illinois' dispensaries (about $684 million) were made by Illinois residents, but a pretty hefty chunk of the state's overall take (over $312 million) came from out-of-state, or just-across-the-border.