DRM is a requirement of the insurance providers who insure distributors and pay out if the distributor leads to the content being leaked.
In reality the DRM technology isn't that important its more akin to the questionnaire you get for car insurance that says do you have a thatcham alarm.
Too much analysis looks at this from technical angle when it's really an insurers tool to lower their risk (only to lower it!).
It's not a big deal when a device/content is compromised merely a policy pays out in the background to the provider to the effect of % lost revenue. All normal insurance ruled apply, payout decided by expert witness, higher premiums for less secure devices etc.