[Sagat]

I know Musk is worshipped by the Hacker News crowd (and rightly so) but as with all things related to technology it's really hard to make predictions considering the fact that there could be a "black swan" type breakthrough or accidental discovery that completely changes everything.

[jtfairbank]

He didn't predict anything- he analyzed the existing technology and infrastructure to conclude that the cost-to-benefit ration was too high. His argument stands until a 'black swan' type breakthrough occurs, and by its very nature there is no guarantee that will happen.