Drone delivery only makes sense if delivering high price, small weight / mass type products, OR remote areas where a nest truck could dispatch a drone to deliver off the beaten path to save a trip way out of a normal run route.
Delivery vans / truck are efficient, they carry / deliver hundreds of parcels a day of almost any weight / size.
Unless they go to half helicopter size drones, it's always going to be a bit of a fad.
Having nests every say 5 - 10 km grid square is just not going to be very economical / feasible / safe etc.
Courier van type hubs are like one in a major city, and work very efficiently in general.
Look at the trial in the Logan area SE QLD.
Brothers neighbours ordered a pack of Tim Tams from the local shopping hub nest, just the normal price, no extra for drone delivery, discarded little delivery box must cost a couple of bob . . . how is this going to work long term ?
This is of course the Wing (Alphabet / Google) system, think the same as being trialled in some ACT suburbs.
I know this property fairly well, I must note it is pretty impressive coming down amongst all the larger gums and pines there.
Edit typo, and as per YT video description apologies for the woman / child shrieks, I did reduce volume approx 90% to cut out the worst of it.