And you have to get the restaurants to sign up, which requires marketing/sales.
It does seem like the sort of thing where someone could develop the app/framework and either focus on some specific lucrative markets (denser areas of higher income cities) and/or have some sort of franchise model.
Very few people do a significant amount of take out delivery when they're traveling. So long as you have a profitable business in a city, there's no particular network advantage (other than any economies of scale) to serving other cities.
It does seem like the sort of thing where someone could develop the app/framework and either focus on some specific lucrative markets (denser areas of higher income cities) and/or have some sort of franchise model.
Very few people do a significant amount of take out delivery when they're traveling. So long as you have a profitable business in a city, there's no particular network advantage (other than any economies of scale) to serving other cities.