I see a lot of potential for electric aircraft for short haul flights between regional airports, or for distribution of cargo between hubs, but not in any sort of dispersed capacity. Hub to warehouse cargo? Sure! Delivery to doorsteps or air taxi? hell no.
Anything that isn’t flying along a designate air route between already establish large volume facilities is just fundamentally impractical due to the safety issues with aircraft. No amount of new tech will solve how fundamentally dangerous a 4 ton hunk of metal going at 160MPH going anywhere but a designated route away from populated areas is.