Why Silicon Valley's high-flying aspirations often crash and burn

Turns out that delivering internet by balloons and drones was a bad idea. Or was it?

We tend to celebrate Silicon Valley’s biggest ambitions, attempts and promises. But we ignore the news of moonshots that fizzle.

Ten years ago, Silicon Valley convinced the public that remote communities around the world would get internet connections from balloons and drones. Google's Project Loon (balloon-based internet), Facebook's Aquila (drone-base…