This is actually incorrect. The issue is with Comcast not signing an agreement with Roku. If you go on the internet on your computer, go to HBO Go, you can log in with your Comcast credentials. You can even plug in an HDMI cable from computer to TV and watch HBO Go on your TV that way. Comcast specifically does not support the viewing of HBO Go (Or Showtime Anytime) through the Roku. Additionally, Comcast now offers a package of just internet + HBO Go without paying for cable. But again, you can only view HBO Go on your computer or other approved device - not a Roku.
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