I agree with you that business needs give rise to specs. That's pretty much how most of the specs are born. MS wanted to make Outlook Web Access behave more like the desktop version and came up with XMLHttpRequest - which went into the spec and made the web of today suck significantly less. That wasn't my point.
I'm talking about adding in mechanisms to support restrictions because of current legal situation. If you add in extensions that help DRM video, why not start adding in support for extensions that can prevent SSN or medical history from being displayed on the screen unless the local machine sends a valid fingerprint signature to the server? Of course that sounds ridiculous. Something like that doesn't belong in the spec. I fail to see the difference between that and EME.