The map shows the two most important characteristics of markets: their size (measured by population) and the level of income - hence the ability to buy various kinds of services. The market is the amount of money available to purchase goods and services. The corporations that provide services (wholesale, retail, finance, business services, leisure services, personal services) to Canadian consumers visualize the country as a set of markets of varying sizes (the cities), and with different characteristics, especially the level of income - which directly affects the ability to consume.