arent they are moving away from "one sony" mantra? i think it was discussed a few pages back on this thread or on Microsoft's. Spinning off their divisions, selling it, etc while MS is more and more into "one microsoft".
here is an article on the subject:
http://finance.yahoo.com/news/playstation-network-encompass-games-tv-155800955.html
In a nutshell they are trying to bring entertainment (games, TV, music and movies) under one hub and more specifically the Playstation brand. IMO to have a Playstation VITA TV device that is unable to stream your TV service but can stream a competitors service like Netflix is a failure. That isn't to say VITA should lockout netflix like Google's Nexus Player locks out Amazon Prime but it is a mistake to not have access to the service on the platform.