“Our entry point is around $3 per passenger mile in these markets, which is roughly equivalent to maybe a ride-sharing company today.”

This is a long way down the road, even says so in the last part of the article. Can it get down to $3 a passenger-mile, probably eventually. In the next 3-4 years? Probably not, especially considering you would need to pay the pilot to fly the aircraft. Even a short distance flight would take at least 15 minutes or so when you factor time to take off, land, etc.

Even then you need to factor in how those aircraft will actually work in the system. I doubt O'Hare will allow them to land enmass at the airport, and there's no way they'll be able to land on roads legally. I just don't see this scaling at 2024 except for people who are able to spend a lot of money for something like this, and there's no way they can take over the role of RJs because they can only travel 150 miles. We regularly do longer flights than that.