HarryT - I think he meant that your bank account is "Digital content"...there isn't any "real" money in an envolope with your name on it...it's just a digital account with other electronic content signifying how large the number is...
I thought the great DRM debate was digital "Software" was always licensed but digital "Content" is not (or at least not automatically). The documents I create using MS Word are not the property of MS, but Word is. E-books are not software, they are a document that cannot be used unless opened by another reader/device that has the appropriate software.
When I purchase content to be used by other software it's the same as purchasing a paperback. I am allowed to format-shift my paperback to Ebook - and the publisher is certainly not able to delete my paperback at their whim. That is one reason why publishers don't want to take a case to court - they know they'll lose. They would just rather scare the sheeple into believing they have no rights.
...at least that is the justification I use to clean all my purchased content and store them on my own hard drive.