National Broadband Network Justification "weak"

An international study finds that the benefits claimed for the NBN have been "grossly overstated". Evidence to support claims made for fibre-to-the-home networks was "surprisingly weak". The study says, "All else equal, faster is better. But faster technologies don't always triumph, witness passenger hovercraft, maglev trains, and supersonic airliners."
South Korea is cited as the world leader in providing fibre to homes, and national productivity dropped from 7.6% to 3.8% since their program was begun. The study finds this drop in productivity might have been partly because of "the massive increase in online gaming, facilitated by the high speed broadband."
When launching the NBN, Kevin Rudd predicted 78% of productivity gains. The basis for this appears to be a paper from Australia's Communications Department referring to gains of 59% to 78%, available from all forms of new technology, from biotechnology to containers, not just fibre broadband. Rather selective use of statistics, Kevin!