I don't think it's strictly true that nobody has the problem of wanting to travel medium distances quickly. In fact, everyone has that problem - that's why the roads are congested and the trains are busy.

It might be more accurate to say that the kinds of flying taxis these companies are proposing - noisy, highly constrained location, unsolved airspace congestion issues at scale, probably quite unsafe - are not really a solution. But even so, there's clearly demand for helicopter transfers to airports - if an electric flying taxi can deliver that at half the per-hour cost and equivalent safety, then it's a win.