Interestingly, it is, mostly. In the early 90s, when blank CDs were becoming a big thing, the CRIA (Canadian RIAA) lobbied for levies on blank media to offset people using the blanks to copy their IP. Well, the lobbying worked, and since the 90s we've had a levy taken off the top of any blank media purchase to cover piracy.
Therefore, because the CRIA is being paid for you copying before you've even done it, it basically works out that it's implied permission to copy. Thus, we end up in a position where downloading things to copy is legal, though distribution or uploading is still illegal. Bittorrent, for example, could still potentially land you in hot water, as you're distribution in addition to downloading, though no cases have been tried on those grounds yet