Earlier quoted context omitted.
It will be several decades before the vast majority of vehicles on the road are EVs. Even if all new vehicles sold were EVs starting tomorrow, the cars currently out there would account for the majority of road vehicles for at least another decade-and-a-half. There's plenty of time to recoup investment on a gas station. Besides, most money for a "gas station" is made from the convenience store. Like you said, gas pro…
But if there are already enough gas stations to service all gas cars, then building another when the number of gas cars isn't going up makes little business sense. I'd understand it in a town with regular queues at gas stations. But there aren't many of those left today.
There may also be other factors at play with the convenience store. Is there a store like that within walking distance? That's another market opportunity. In my home state there is a gas station chain who is very popular for their pizza. They actually opened another station in my home town specifically to keep up with demand for the pizza.