Widevine (Google) and PlayReady (Microsoft) are the top EME DRM providers. Google and Microsoft are both on the EME working group. The critical question is whe

Widevine (Google) and PlayReady (Microsoft) are the top EME DRM providers. Google and Microsoft are both on the EME working group. The critical question is whether rightsholders can use the DMCA (or local equivalent) to sue someone for circumventing DRM technology that isn't their own. If not, if the only party capable of enforcing anticircumvention is the DRM vendor itself, then this could be very effective.