How about this: make DRM standard, and specify as part of the standard everything that I as a hypothetical browser implementer would need to implement that DRM

How about this: make DRM standard, and specify as part of the standard everything that I as a hypothetical browser implementer would need to implement that DRM -- to really implement it, not just offload it to the OS. That would at least be an attempt to stick to the spirit of openness. Instead, what we have is a standard that promotes proprietary platform-dependent features and which will serve only to shut out users who dare to use the wrong OS. Oh, wait, Hollywood does not really want openness and would never have gone for that. Why is W3C putting their interests above ours ("ours" as in "the users'")?