But that's entirely the reason Netflix wants this. They don't want to create a separate application for every platform. EME offloads the cross-platform responsibility onto the browser vendor.
DRM discussion aside, the browser has not been a simple "document viewer" for quite some time, despite its origins.
That's exactly what they did here.
> Push Microsoft to get Silverlight onto every platform.
Why do that when you can get every company to adopt DRM with the pressure of browser competition?
> This does not need to be under the w3c's bailiwick.
Agreed, just pointing out how this benefits Netflix by offloading a development cost onto browser vendors.