[tharmas]

>Canada as a nation benefits from all our parts being within a common business zone

But there is no Free Trade between Provinces (Inter-Provincial Trade). Canadian Provinces have more Free Trade with the USA and Mexico than they do with each other. Canada isn't really a country in the economic sense. And aren't there restrictions on professions like Engineers and Nurses such that you can't just pick up sticks and go to work in another Province? There's bureaucratic paperwork to fill out before you are good to go.