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Google is Killing Its Solar-Powered Internet Drone Program (businessinsider.com)
An anonymous reader writes: Google's "moonshot" X division is ending its Titan drone program, which planned to use solar-powered drones to beam internet down to earth. Google bought Titan Aerospace in 2014. The company was developing solar-powered drones that could fly for several days at a time and take images of earth or beam down internet. When Google reorganized into Alphabet in 2015, Titan was folded into X, the Alphabet division that focuses on wild tech projects in hopes of stumbling on the next big thing.
More likely the regulatory/insurance climate is insane. I would bet that the money required to get the proper radio frequencies, get government approval for a drone holding pattern high enough over an urban area and insurance to cover any accidents would bankrupt a small country. There are most definitely also some technical hurtles but I would wager those are relatively minor in comparison. I think Musk summed it up when he was discussing the challenges of starting SpaceX, I believe he said something to the effect that the rocket science was easy, cutting through the red tape took a majority of their time/money. And that is for an industry that has existed for decades.