You have a point about current requirements, and not only that but current technologies to do anything they propose in any feasible manner...but guess what??? things are evolving and its coming...your grandkid's grandkids may actually see some of what is to come in any appreciable way...Oh, it won't be Amazon or anything else that's free enterprise related that is of any real consequence...We will eventually understand the difference between what we now call the hobbyist "drones"and real drones... we will beg for the days all we had to worry about is a few toy drones flying around...