Theory regarding XB1 DRM, and why Sony may not have had it in the first place.

[theprof00]

And the reason why I believe sony does not have such an integral drm is because
1. Their core IS the traditional core
2. Sony went directly to devs for input
3. Which is why the rumored drm is at the discretion of the publisher (most devs know drm is a mistake)
4. They own an even better drm patent (one that can write to the media. Which makes everything very simple and OFFLINE)