[aktonin]

It's pretty obvious to me.

The primary reason is the HD television networks are in competition against Blu-ray. If someone was subscribing to an HD movie channel, then bought a Blu-ray player and stopped his subscription because of all the new Blu-ray movies he was purchasing for his library. Obviously that's a big threat to them. And often the networks that run these HD movie channels are the same networks with news channels bagging Blu-ray.