Proponents of government run health care have an inexplicable disdain for geographic variability. They often seem to assume that physicians, treatments, and outcomes should be constant across the entire United States. Any variations in price, treatment modality, or expenditure ranks as a sure sign of an improperly run health care system.
The problem is that normal human activities vary even over relatively compact geographic areas, and the variations often reflect the exigencies of daily life rather than administrative boundaries. For example, when a company took the trouble to analyze credit and loyalty card data about its customer’s shopping habits, it found that even a relatively compact area like a city had distinct variations in its shopping and retail use patterns.
The maps below are reproduced from a Boston Consulting Group article about what the company learned about its pricing power. In the beginning, the company had the single pricing zone for all of Georgia shown in the left hand map panel. The right hand map panel shows how its pricing zones changed after customer habits were considered. Of interest is the fact that Atlanta ended up with multiple pricing zones. High population density makes it harder to move around, limits customer mobility, and people’s ability to access goods and services. The report notes that in Atlanta, stores serving the same clusters of customers often are “located along commuting corridors.”