As I mentioned, already petrol stations in many countries do not actually profit from the sale of petrol since margins are so low. Rather, their profits stem largely from the attached convenience store.
And the majority of these 'every day commuters' would currently own conventional cars.
Those who drive electric cars would be charging their cars at home and as such hardly every need to stop in these stores.
By replacing conventional cars with EVs will only see that tight profit margin getting tighter.
And that's with me making few convenience stops. There's lots of people that get a coffee every day, they aren't buying gas each time.