I guess I'm one of those people who think that leaks have no major impact on album sales.
People only buy albums nowadays if they are genuinely interested in the artist's work - and in that case they are going to buy the album no matter what because of all the additional content.
People who are only going to download it would have done it at any time either way...
And most importantly, the vast majority of profit the labels and artists make stems from tours and merchandise - and leaks actually function as free promotion for that.
