The reason Comcast will not allow HBO GO on the roku is two-fold. 1 - Roku is a threat in that it helps eliminate the need for extra boxes, each worth $120 p/yr to Comcast. Despite already gouging you for what you have, they simply want more. A direct connect for HD programming (3.1, 6.1, etc) is already free, but add the Roku with Hulu, Netflix, ESPN, and HBO GO, and do you really need another box? Probably not. 2 - Apple TV does authenticate HBO and ESPN via Comcast. If you think for 1 second that there isn't back alley stuff going on between Apple and Comcast to help keep as much content off Roku/Tivo/LG/Samsung/etc, then I have a really nice bridge for you available at a great price! Why Apple but nothing else? Do the math.
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