That would be a persuasive argument if a more significant quantity of music, tv shows and movies were legally available in digital form and in formats that don'

That would be a persuasive argument if a more significant quantity of music, tv shows and movies were legally available in digital form and in formats that don't place unacceptable limitations on the purchaser. But that's simply not yet the case. Also: it would help if there was any sort of actual competition in pricing.