Re: Sorry You Were Out
"Now the UPS driver can deliver the Sorry You Were Out cards from the comfort of his van."
You have hit the nail on the head. I would guess that the costs of failed delivereries are far more significant (and perhaps avoidable) for delivery companies than inconvenient delivery paths. When I order stuff online, immediacy/speed is of far lower importance than knowing exactly when the delivery will occur, or being able to schedule the delivery.
So my rationale is that drones are the usual solution searching for a problem. Delivery companies would be far better off either committing to specific delivery in a one hour time slot (or less) one or several days ahead with, much as supermarkets book their deliveries. That would require far better systems integration between retailers and the delivery companies, but at the moment there's no obvious appetite to do that, whereas there is appetite to prat around with drones.