Different availability on itunes shits me, as does incomplete album collections.
Would you buy paint from someone who can only supply 4 out of 6 colours or 2 out of 16.
Media companies need to move on, there will always be those that don't pay, you should never impede those that are willing to, nor those that are shopping via trusted medium.
Media Whores: Jono et al.

Neither Tim no Al Gore invented the internet, get over it.