Yup, game stores host and charge an overhead from the DM, but generally the DM will then charge a little more than that. It's not a TON of money... Maybe you make 15-60 a session depending on the number of people and how much you charge, but still :/
Discussion
I don't vibe with that. For me it's always been about hanging out with people I have fun with. I rarely played in a shop, usually my place or a friend's.
Well...now I suppose anywhere with internet works