The vast majority of humanity is living in places where basically all food can be grown locally, with some exceptions for luxury (tropical fruits in high latitu

The vast majority of humanity is living in places where basically all food can be grown locally, with some exceptions for luxury (tropical fruits in high latitudes) and seasonality (not alle produce does store well fresh, though practically all can be frozen, dried or canned in some way). There are some extreme exceptions like the United Arab Emirates etc. but they are home to only a fraction of the world population and building a city like Dubai in a desert was probably not a great idea to begin with.