"We love serious technology innovations, and there is a strong bias towards large technology innovati..." — Vinod Khosla

There's a big difference between needs and requirements for grid-based electricity versus those for distributed rural homes or remote locations, or even rooftop solar, where photovoltaics do OK. The more economical a technology is, the faster we'll see adoption.

The probability of failure doesn't matter to me.

Electric cars are coal-powered cars. Their carbon emissions can be worse than gasoline-powered cars.