But if you really believe their is a chance that drones are going to be dropping packages off at you doorstep in under 10 - 15 years, you neither understand the logistics and you are both delusional and naive.
Interestingly, I think the DHL demo illustrates how it would actually work: picking up packages and taking them to the local collection and distribution points. You'd have to register as a verified pick-up point first, and then just schedule your pick-ups, and the nearest unladen drone in your priority queue swings by to pick up the merchandise for shipping.
Of course, one neat thing that COULD be done (but doesn't really fit the current model) is doing pick up AND delivery -- and patch the shipper through to the receiver, so that the shipper can verify the package is being delivered to the right person, and the recipient can verify who the package came from. There are, of course, a few privacy implications here as well.