Drones have been around for a very long time. Longer than most of the people here, I bet. What's changed is economics. Drones were initially incredibly expensi

Drones have been around for a very long time. Longer than most of the people here, I bet. What's changed is economics. Drones were initially incredibly expensive, but the price of electronics, motors, and batteries have come down and become smaller and lighter over time. Only fairly recently have those prices fallen to the point where normal people could afford them, and well-funded people could afford large quantities of them.