If iTunes et al solely deal with distributors/publishers, then they can pass all copyright concerns onto them - there's a vetted company/organization (which pre

If iTunes et al solely deal with distributors/publishers, then they can pass all copyright concerns onto them - there's a vetted company/organization (which presumably must be a legally-formed entity). As someone else pointed out, they don't want to become the "YouTube of Music" - but I suspect it's more because they want to avoid all of the copyright issues that come with such a mantle. No need to be sued or worry about DMCA so much etc.