Question: What are the potential problems of allowing businesses to use UAV's to provide services? Answer: The single most pressing issues, expressed in layman's terms, are the possible damage to people and property. The current generation of UAV's are not failsafe and, added to pilot inexperience and testing (anyone can buy and fly), combine to create unsafe conditions for the public. More specific examples include: 1. Quadcopters and UAV striking pedestrians, cars, trucks, etc. 2. Entanglement with power lines 3. Interference with licensed or even recreational flying. Current quadrotor machines are capable of flying a mile or more high (using autonomous flight - which is currently illegal if out of your sight!) - so this is not a simple matter. Winged UAV's can fly, in theory, for hours and many many miles. Opening the skies willy-nilly to flying machines operated by amateurs is asking for trouble. That said, there can be exceptions for lightweight machines, close-in range, private property, etc.
