Almost anything else. I agree people will eventually get over their qualms; I just think this is a big qualm to get over.
Though what you've said about cheap helicopter flights has me thinking - perhaps the way in will be via the scaling up of quadcopters and drones. Once smaller drones are a familiar thing, larger passenger drones would be less of a stretch.
I'd argue it's easier psychologically to hop in a drone based on an ancestry that's never had an on-board pilot, than to hop in a plane that's had the pilot removed and replaced.
I'm sick to death of this meme that Americans are only interested in low prices. The fact is airlines were one of the first of many industries to use fees, line by line cost breakdown, obscure deals and a baffling purchase process to strand customers on an island of price comparison and nothing else. See also: cell phones plans.
If you knew what you were getting and could hold airlines accountable when they didn't deliver on what was purchased I promise you price would no longer be the only factor. This is not a truism about Americans you've found, it's a truism about distorted and manipulated markets lacking sufficient regulation.
I'm one of those Americans who doesn't buy the cheapest ticket. I buy comfortable seats at convenient times with airlines I'm loyal to. Guess what I see none of? Any of those things! My bags are free, my drinks are free, I get to go to the front of the check-in line and, many times, security line. On occasions where I've been charged a change fee, a quick phone call gets it reversed. I board a 6:30AM flight tomorrow and am honestly looking forward to a few hours of cool views, relaxing reading and maybe a touch of alcohol.
Airlines tried competing on pitch and leg room. Their behinds got handed to them by travellers switching to budget airlines. If you want better service, there are business class tickets available at prices cheaper than pre-deregulation fares.
Note that this effect isn't constrained to Americans. European non-business passengers' demand for air travel is also extremely elastic with respect to price [1].
[1] http://dare.ubvu.vu.nl/bitstream/handle/1871/48303/140307.pd...
If there's one consistent view Americans have expressed about flying, it's that they'll choose the cheapest flight over almost anything else. Bring a cheap self-flying route to market. People will get over their qualms.
> Cargo flights strike me as the much clearer entry point for the technology
Agree. That said, a helicopter seat from Manhattan to the Hamptons costs about $700. If you cut that to $200 or 300 the demand would be massive, pilot or not.