It doesn't seem too unreasonable to plan for requiring the drones spend as much as possible of the route they fly take place over places where the risk of dropp

It doesn't seem too unreasonable to plan for requiring the drones spend as much as possible of the route they fly take place over places where the risk of dropping them on a person is small. Fly them preferentially over roads/railwaylines/rivers/canals/buildings instead of sidewalks/schools/parks. Require them to be insured for personal and property damage (in much the same way as cars are in many places), have the companies operating them be subject to the same sort of existential threat as Boeing is under right now if they fuck up. I don't think this should be an industry lead by "move fast and break things" style engineering, but I suspect if could usefully exist with a lower regulatory standard/cost than commercial airlines...