If they were separate arguments, then album sales wouldn't have dropped after iTunes started selling $0.99 a song. CD Singles have been around forever but everyone paid the extra couple dollars to get the rest of the album even though in many cases very little effort was made producing the rest of the album.
To clarify, I don't mean that the delivery options won't have an impact on price. People often seem to frame the arguments around videos services as them not providing the unit of content they want (like marssaxman above), when more often than not they do. The real complaint is usually just what your saying, they don't offer it at the desired price, despite a ton of unbundling from the old model. That's a fair critique to make, although I'm hopeful the market is able to sort it out
