[HarryT]

That article seems to be saying that geographical restrictions aren't the basis of any specific law. Sure, we all know that; they come about as a result of book distribution contracts. If a publishers signs a contract with an author which only grants them the right to sell the book in the UK, say, then they are not permitted to sell that book to anyone outside the UK. It has absolutely nothing to do with Australian law; it's a matter of contract law in the country that the publisher is in.

This is completely unrelated to copyright issues; the author of the article you linked to seems to be a little confused.