The killer app in this space is studio catalog - that's the competitive advantage. Distribution for NFLX is strong - but given the move for most new hardware devices to include "Apps" integration, distribution is going to be a waning advantage. It's going to be an interesting battle, for instance what does the paperwork look like in Netflix' studio agreements - can they sell to Apple?
They seem to be making headway in expanding their catalog - e.g., the $1 billion deal with Epix (Paramount, Lionsgate, and MGM) to increase the size of their "Watch Instantly" portfolio. From what I've read, this is a big deal, as they're paying a bit more (relative to the premium cable channels) for the same rights.
More info on the Epix deal: http://www.hollywoodreporter.com/hr/content_display/news/e3i...