As opposed to other drones (we are assuming a future where this isn't a novelty, so lots of air traffic) and regular aircraft, flight regulations, weather and b

As opposed to other drones (we are assuming a future where this isn't a novelty, so lots of air traffic) and regular aircraft, flight regulations, weather and birds.. and yes, the landing and obstacles at low altitude. Now maybe if they never had to go low but literally drop ship the packages..