[gwbas1c]

Every time I've heard about drone delivery; it was either implied or directly stated that it would take a long time to be generally available. It's easy to forget that, historically, "tech" would often take decades to develop. (The rapid changes we saw in the 1990s and early 2000s is unusual.)

One thing that I think would be interesting is "hybrid" drone delivery: A delivery truck could drive to a central location, and then a "swarm" of drones could drop off packages at homes within a small radius.

[john_q_public]

I would argue that the changes you refer to around the turn of the millennium were not in fact all that rapid, but rather the more publicly visible phase of a more gradual change that started no later than 1969 (when ARPANET went live), perhaps well before that date.