There is a reality check incoming for many involved in these new growth sectors with regard to the certification standards required to operate over people - for both small unmanned aircraft and 'flying taxi's' or EVTOLS. Aerospace and Aviation is an expensive business, and most of that cost is built in under the auspices of regulation. I'm kind of fascinated to see how the likes of Amazon deals with liability in this setting.
I think the vision of small unmanned vehicles operating all day every day over and around residential areas is unlikely to become reality any time soon, if at all. The major work will be with much larger vehicles providing JIT distribution between hubs to reduce delivery time. I expect the majority of home deliveries to be made by electric vehicles. The exceptions could be the more remote homes. After we get over air taxis and evtols, we can concentrate on the real opportunity with logistics.