I'm going to guess SlingTV is a different product then, not usable by or tied to the boxes? That seems to be the thing they kept hammering when I still had to put up with commercials. If SlingTV is a box independent service and a SlingBox is only capable of showing an active cable subscription, then yeah, I agree it seems useless. But the cable boxes have had some form of DRM for years. I wonder what kind of agreement they must have had to allow Sling to do that?
how can you have DRM when a audio/video is passed to a TV- sling just has to act like a tv