As an air-taxi skeptic, I have to say I am refreshed to see a startup actually spend more than five minutes figuring out the market fitness problem. Focusing on bypassing geographic barriers seems to be a much better use case.
I am still pretty skeptical on the idea overall. Everyone drools over the travel times and not enough on the confounding factors. Getting to and from the taxi. Dealing with regulations. We can't even make public transit in dense urban cores work - why would this much harder idea work?
I find it amusing that one of their examples of bypassing noise ordinance restrictions is to follow existing infrastructure routes. The irony seems lost on them.