I enjoy never going to a gas station as an EV owner. It's unlikely I would ever charge at one. I would rather go somewhere I can grab real food while my vehicle charges, or a good cup of coffee, anything but a glorified vending machine that is most gas stations. I could be wrong, and if you can make a business out of it, more power to you.
A model are the gas station restaurants of the deep south USA:
https://www.southernliving.com/travel/gas-station-restaurant...
Outside of the deep South and freeway rest areas in the US, nobody thinks of a gas station as a place you'd want to get food, because people think (perhaps correctly) that gasoline is toxic. Electricity isn't perceived the same way.
Mid to high end hotels and resorts have already installed chargers due to their clientele increasingly driving Teslas. This idea is to work from the other end of the socioeconomic spectrum.
Eventually of course that margin will decline as the stations become more common, but stations could also reduce their costs and peak dependence on the grid by using solar plus storage.