The core philosophy of DRM is problematic as there is no "core philosophy." Some use it to ensure only paying customers access content. Others use it to try and implement transactional systems and rental services. The only thing DRM has is a goal, and that is to protect revenue streams.
The grander goal of DRM is to monetize every and all uses of content. Move to a different device, charge a fee. Make a ringtone, charge a fee, etc. To grow the revenue stream and leave the end-user powerless.
Originally Posted by mmurfin87 The only real objection here can be when the DRM doesn't allow users to do what they should be able to do. DRM is explicitly intended to do just that. It just so happens to break down every so often (technical failure, business failure) and deny users rightful access to what they own.
The only real objection here can be when the DRM doesn't allow users to do what they should be able to do.