Looking at the page of Business 2.0 magazine it seems they offer subscriptions in US only (no link to them provided on purpose). I tried to search everywhere on their page, but everywhere you click you will find only a US price and US subscription number. Or to be true, they mention also a Canadian price, but do not even have a form for the Canadians to subscribe.
Too bad, they lost one more customer. I suggest everyone to subscribe to Red Herring instead, they know, how to serve their international customers well.
edited: I do appreciate Business 2.0 Editor