This is very likely true today. But things will evolve. There are many variables to consider: - Competition between shops - product brand and quality - proximity to clients (consider raise of petrol price) - associate shop brand with product (locate closest starbuck, not only coffee shop)

This is certainly not an original idea and I'm not sure how it could be possible to become a leader in it. Users need a map to locate the shops. So the map is a key component here.