Something like city transport travel modes monopoly, leased to service providers that offer a monthly travel plan to the public. This on a world scale that would have various plan options.
I just keep coming back to the reality of, what,
two or three passengers dropped on the roof of a privately owned CBD "helipad". Now they have a lift ride and walk to their office. How many such pads exist in Australian capital cities? Where do they get picked up in the suburbs? Local city councils are not going to let them mix with park recreational areas unless they fence off an area as a landing site.
As I have said before, helicopters can already do this but they are hardly ubiquitous.
How does all this fit with the low level "drone" delivery corridors that have been discussed?
https://www.abc.net.au/news/2019-04-...light/10983684