There's a reason you see so many 20+ year old CRJ-900s and MD-80/90s at the airport. Airlines literally cannot afford new planes, and aircraft makers can't get new airframes through the regulator process easily enough. Boeing struggled to get fly-by-wire to pass FAA regulations, how do you think they'd fare trying to replace aluminum with 3D printed plastic?
tl;dr: It's basically become apparent that too much safety is killing people.
This neatly illustrates why: http://i.imgur.com/Un22IYK.png
It's not just certification, either. Product liability accounts for a large part of this increase: "Average cost of manufacturer's liability insurance for each airplane manufactured in the U.S. had risen from approximately $50 per plane in 1962 to $100,000 per plane in 1988." (https://en.wikipedia.org/wiki/General_Aviation_Revitalizatio...)
This is why the experimental market is doing so well right now. No need to pay for either :P
If the medical industry worked like the FAA the jobs would be boring, and ~30,000+ fewer people would die a year.
Source: Had an airline for a client, saw how sausage gets made
I have one for our EMR: You can easily configure checkboxes, but not radio buttons, on an order form. Argh.
Musk has repeatedly stated that his goal is to get space travel to be like airline travel. Airliners, with their rapid turnaround and zero refurbishment between flights other than cleaning the cabin and refueling the plane, are the model he's shooting for with his rockets.
Essentially all of the problems in air travel come from the airlines, not the airline manufacturers. All of the problems discussed in this article are about ancient backend computer systems that don't get the job done very well, not the actual aircraft.
What most people don't realize is that an airliner is a $40-240 million dollar investment that needs intensive regular maintenance. Nobody gives a shit if you can shave 100lbs off the weight of the fuselage if you also have to replace the entire thing during every D check.
FWIW, many ideas have been tried in this space. Assigned seating vs not assigned. Dual boarding through both the front and rear door of the aircraft. Charging for carry on luggage. Tons of time and motion studies. Nothing really compelling has ever come out of it, for various predictable reasons. The big one, to me, is that airlines are compelled to pack people tightly. Couple that with human behavior, and you're done. It only takes one person to hold up everyone else, because aisle space (as compared to seat space) doesn't make money.
There's not only the western European companies, but even cheaper eastern ones like Wizz Air and AirBaltic.
If airplanes were as common as cars you would see little KIA two seat airplanes selling for $15,000. Honda and Ford would be a little more. But we need to ship a lot more airplanes for that to work.
Google bought them for $700M.