The privacy issues will also be interesting. Do you think these companies won't be attaching cameras to them as well to capture as much data as they possibly can why flying around? Then multiply that times as many drones as will be flying around. It will be great for tracking too, since you can theoretically have almost have 24/7 coverage, especially cities where everything is more compact. Just patch all the feeds together, like they do with cell phone cameras in Argus: https://www.youtube.com/watch?v=13BahrdkMU8