DRM is easy to remove provided you are the person who bought the e-book. It simply limits the reader who doesn’t know how to remove it — the majority. For those people, try searching Google for ‘remove DRM’.
A new author on Amazon usually checks that DRM box when they publish their first book at Amazon. They are scared of…
You still can not prevent copies. So it’s “just” some kind of a universal DRM. It doesn’t protect from hack but largely makes music businesses more frictionless.
Businesses playing music would love to be fair while geting rid of copyright accounting !
But how do you prevent forgeries ? You still need a checking authority… then, how can we have only one ?