News this week from Comcast that it will take Xfinity Instant TV on the road and offer it outside of its customer footprint, but inside its platform reach, was digested by analysts and industry watchers in a far too reserved fashion. This long-awaited move to put OTT video at the heart of its customer acquisition effort follows in the footsteps of European counterparts who have found that such a move is massively effective and disruptive. Comcast is, in effect creating what appears to be a rival to Sling TV and DirecTV Now, but is using it to sell broadband. So far Stream TV, its 2015 $15 service, was just a really skinny bundle on iOS and Android, mostly the big…