I pay tax on hard disks to be able to private copy music and videos yet they are protected by DRM so its not possible to copy music to your friends, this should

I pay tax on hard disks to be able to private copy music and videos yet they are protected by DRM so its not possible to copy music to your friends, this should also be challenged. Either there are DRM and no copy tax or there are no DRM and you are allowed to copy. Same goes for HDMI.