Since 2015 Drones sales have sky-rocketed, according to research firm Gartner the total drone unit sales climbed to 2.2 million worldwide in 2016, and revenue surged 36% to $4.5 billion. BI Intelligence, Business Insider’s premium research service expects sales of drones to surpass $12 billion in 2021. Why is the sudden rush in the drone interest? Discounting the drone flying as a hobby, the…
