system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is street food not very common in the US?

Whenever you're browsing reddit, you inevitably see someone singing the praises of the street food that you can find in one country or another. But why does street food not really seem to be a thing here in the US? I've lived in three different states and never really seen it. There are a couple of food trucks and that's it. Is it only in bigger cities, or is it actually a national/cultural difference?
gpt
Where so many Americans are spread out over a large area, there are very few places where there is a high enough concentration of people to allow street food vendors to make a profit. It's common in large cities like New York with lots of foot traffic to have street carts, but anywhere else in the US it wouldn't be very profitable.