Which are both hard to get to without public transport that one sees in Chicago proper (PACE barely counts). A lot of folks in the city don’t own a car. At the same time those same folks are probably smarter than to spend money at gambling parlors.
Once again: you can get to Berwyn via the Blue or Pink lines, as well as Cicero, which is directly adjacent to Chicago. Both allow video gaming. Both are decidedly middle/lower-middle class areas. It's just not the case that video gaming isn't present in Chicagoland.
palos and orland are pretty reachable by metra, though the times aren't ideal. Once you're there my memory is that it's walkable enough to a bar with gambling. It'd also be like a $5 uber/lyft from the metra.
My suspicion is that urban gamblers mostly take the blue line to the shuttle to Rivers.
