A gas station just needs a tank and a pump. You can put it anywhere and can operate with a small generator if 110V electricity is not available. Even as a country you don’t need infra. Just some trucks to import from the closest refinery/ port
My understanding is that much of the grid already exists if there is a town or even just a rest stop present, it likely has grid power. I will grant that this doesn't speak to the suitability of said existing infrastructure for running one or a number of a high voltage / high speed chargers.
> Just some trucks to import from the closest refinery/ port
Driving thousands and thousands of miles.
I do not try to claim that trucking fuel over long distances is efficient. Just stating that gas stations themselves need no additional infrastructure.
You need to install several specialized sealed tanks underground, and the pumps that will get the gas & diesel (and sometimes kerosene) in them up to the cars.
You then need to be able to make secure, safe deliveries of highly flammable liquids to the site regularly, forever.
Once an EV charger has been installed, it'll need occasional maintenance, and if some yahoos vandalize it it might need repair or replacement, but otherwise it's pretty much good to go, potentially for decades.