Precisely. iTunes has grown to be many things, but Apple isn't going to sit on it's hands and do nothing to address emerging trends. They have stubbornly rejected the subscription model in Music for years (even this post supports that general consumer behavior justified that position), but a subscription model isn't the only way to address the emerging consumption trends and improve on convenience. If it is I can't believe that iTunes Music would ignore the model if general consumer behavior shifted in favor of it.