Not fit for purpose
As expected, this is a group of product analysis types, capable of looking out a maximum of 5 years, but without any of the grounding that enables sensible prediction out to 20-50 years. Even the talking head says "...we look at scenarios that look realistic from point of view of 2013. Even by 2015, it will more than likely change, because there will be different factors that will have greater or lesser strength..."
We are talking about an NBN that doesn't really start earning it's stripes till 2020-2030 - its outside the scope of what these types can manage.
Look, they are evolutionary, proportional change types. They can tell you the next ipad will have this speed processor, even justify the decision for you, but they have zero credibility when talking about revolutionary level change. Pointless to waste the money.