As I said in a previous comment, @techblogger, I share your critical vision, not merely integrated, to the technological advance. In particular, robotics must be regulated and adapted to human needs in order to benefit them, not to supplant or deny them. This is the case of employment (or unemployment).
In Jun Xiao's commentary that he quotes, I consider that it would be the key to the use of drones for distribution: places difficult to access due to distance or other obstacles (islands, mountains, etc.) or to attend accidents or other events that imply impossibilities of immediate human work.
Thank you for your post.