> At the same time, I perceive DRM as a way to control access and ability to copy copyrighted material.
That is merely the stated objective of DRM. However, it's well known and accepted that DRM schemes do the following as well:
1. Restrict where (device or application) the user can consume the content.
2. Restrict how long the user can consume the content.
Despite denials, I'm yet to see DRM schemes that don't do these as well. And everyone's concern regarding WEI is regarding point 1 and possibly point 2 as well. So, saying that WEI isn't DRM scheme is based on a narrow interpretation rather than a practical one.