>The provinces as legal entities are just legislatures that set provincial law for the provincial residents (i.e. the Canadian citizens who are registered as residents of said province), rather than for the geographic area those residents happen live in; and courts that uphold laws for those residents; etc.

That doesn't sound right. How would it work for corporations? If one province has strict pollution regulations, does that mean you can bypass all of that by registering your corporation in another province and bringing in workers from another province?