Looking at that from a publishers perspective...<p>That locks me in to your encryption system, and probably locks me into other things as a result. That also doesn&#x27;t give me the ability to enforce other DRM things like only one playback per device, or only allowing it to happen between 7am and 7pm, it also means that i need to trust the client, whih is exactly what DRM is trying to not do (because if the publishers could trust the client, an HTML flag for &quot;don&#x27;t let them save this&quot; would suffice.)<p>DRM by nature basically needs to be a black box. This just standardized how that black box hooks into the system, and sandboxes it to limit what it can look at (and so we don&#x27;t have a repeat of the Sony music issues)