That's the magical part of population density. If a lot of people travel through the area, this area, almost by magic, develops facilities that cater to traveling people. If not a lot of people travel throuth the area, then, well, it's not a lot of people so their experience and needs shouldn't dictate how the rest of the world operates. The rural america from those states that nobody quite remembers the names of, in particular, is not representative even of the US as a thing, let alone the developed world.