They make no money with selling gas, and gas will run out. They make same way money as a cinema. In drinks and food.
And with the electric charging times people will certainly leave the car to shop for something.
So the exact opposite
I agree that they probably would benefit more from food sales off EV charging on a per vehicle basis, but they would need to turn over the chargers to new customers much quicker than what happens now for that to really benefit them.