Sometimes some spectacularly ignorant posts happen from otherwise thoughtful people:
HondaJet | Official Site of Honda Corporate Jet Aircraft
As a longtime (sadly, now former) pilot and aircraft owner/operator I know the Hondajet personally. Everyone knowledgeable I know shares my opinion that it is quite advanced and innovative in a seriously slow-to-innovate industry. Only avionics has advanced for GA.
Your ultimate point is mostly what Elon has said a few times. Factually, the real impediment to investment in anything aviation related is scale. Were the scale large enough major innovation would be easier to justify. The regulatory issues are more consequential today than ever before because the entire industry has tried to evade rules, often with honorable intent, but evasion corrupts, and successful evasion Breda contempt. That is the lesson of Boeing.
We should be fully aware that all the same negatives apply much more in space than they do for aircraft. Thus, the obvious example: SpaceX. Every single negative that applies to aircraft applies more to rocketry.
So, despite Elon’s protestations, if he saw a sound reason to disintermediation the commercial aircraft market he certainly is well equipped to do so. The engineering base is closely analogous to the Hawthorne/PV/Long Beach talent pool. The huge opportunities are in propulsion systems, materials, controls and maintenance. Were the time available and the talent also we can be assured that we’d see marvels. Imagine transformation of predictive analytics to automate most maintenance checks. Imagine aerodynamics done originally rather than recycling ancient airfoil designs.
I do not suggest this is something he’ll do. I am positive that as an operator of Falcon and Gulfstream he is acutely aware of how hidebound the industry is today. The majority of SpaceX Hawthorne engineers had origin with Northrop, McD/Douglas, Hughes etc. Those people knew tradition and successfully upended with SpaceX.
Doing the impossible and/or wildly improbable is Elon’s history, from zip2 until today. No wonder when he likes:
Infinite Improbability Drive