Well, maybe. But if his ideas are so great, why can't he sell them to the market on their own merit. If things can't scale, and make money, well, then they aren't really all that much good.
As for being a decent futurist, Pirrong makes a compelling case that Musk has exercised his market power before to artificially increase the price of his stock to raise capital.
http://streetwiseprofessor.com/?p=7294