Netflix should pass on the "Comcast tax" to Netflix customers using Comcast. That might encourage Comcast users to switch ISPs (assuming competing broadband services are available to those users).
They don't guarantee the same listings, quality or availability, and you have to have a certain Cable TV subscription level already (i.e., you're already being gouged).
I posit that Comcast's streaming customers and Netflix customers have very little overlap.
You are hilarious.