Ship travel was already something most people in developed countries could afford. What’s the use of getting around faster and higher off the ground?
It's hardly the same thing with a supersonic airliner, which just reduces the time in roughly half.
http://www.century-of-flight.freeola.com/new%20site/commerci...
My bet is somewhere like $4000 roundtrip trans-Atlantic ticket or $3000 cross-country ticket in U.S. is about the maximum the market will bear.
Boom won't be flying over any country. They will only travel over oceans, to prevent issues / complaints that Concorde had.
More importantly most of those things don't inconvenience the people around me. If I use my computer or my kitchen-aid (high-price items in the past), it doesn't disturb my neighbors (or would have in the past when they were still in their infancy).
When it comes to transport: Partially; air travel has become fairly accessible for a lot of people now compared to a hundred years ago. Cars are also pretty common now - although driving is still quite expensive.
But I don't see how we can ever have personal airplanes be as affordable and accessible as cars. Not going to happen. I'd be happy to be proven wrong though.
This first demonstrator is a two-seater. The next jet they are designing is the Overture, designed for the ~50 seater business jet segment. And as the name hints, they don't intend to stop there.
Sibling comment already addressed that Boom isn't "personal airplanes".
However: why not?
I mean, apart from the current fact that not enough people want this.
Let's look at a Cessna. It masses around 800kg empty, so lighter than many modern cars, and that's not due to exotic, expensive materials, and without that, cost tends to be roughly proportional to weight.
The engine is a four cylinder with 180hp. My car gets 200hp out of 2l with a turbocharger, but aviation tends to use very old-school engine tech for reliability, so it's got huge displacement, almost 6 liters. So there's some room for improvement there, particularly once we go electric, because electric motors are so much more reliable.
Fully electric is already viable for flight-training and other short-range needs, and unbeatably cheap for those missions. (A friend and I had this idea of getting a used Antonov An 2 and stuffing it with electric bus batteries for a south-/west- to east-bay commute... The numbers worked quite well).
Hybrid electric could mean getting to use much smaller, cheaper, common, efficient engines and use the electric engine and some batteries for safety.
Avionics? Yup, somewhat complex and expensive, but really not for too many intrinsic reasons. The gold standard for GA today is (still?) the Garmin 1000. An iPad has most of the same sensors (as does my Apple Watch), and the compute power is nothing to write home about.
The reality we live in today was created through the use of wealth that employed people and produced better and better goods to meet more and more people's needs.
But there will never be a future where private jets are economical for the masses (even private cars aren't really economical for the long term for everyone globally), and I doubt the tech Boom are developing will make it into widely used commercial planes, but perhaps it will.