As for TIME magazine, it was never restricted from selling in Canada, as are any other publications from anywhere else in the world. Take a look at any major newsstand in any city in Canada -- the Hub in Edmonton for example -- and you will find more choice from more countries than a similar newsstand -- if you can even find one -- in a similar sized US city, or just about any other city in the world.

The issue with TIME was that in order for Canadian advertisers to claim their ad expenses in TIME as legitimate costs of business, the Conservative government of John Diefenbaker insisted that there be Canadian editorial content in TIME. It could not just dump the American edition into the Canadian market with Canadian ads, the same way it creates dozens of regional editions across the US with split ad runs but identical editorial material. So TIME complied -- as it does in Australia, the UK, France and dozens of other countries -- and created a few pages of Canadian editorial material.

Why do you consider intellectual content property to be different from the normal marketplace function that applies to any other product? Why does Dell sell computers via Dell Canada and not directly from the US? Why did Amazon set up a Canadian operation rather than just operate from the US? Because these companies recognize the sovereignty of the Canadian marketplace.