I think what matters more is the line of my argumentation. If I was a long-standing aviation industry veteran I would probably not be the source of great innovation and thus be blind for radical disruptions. Automotive and space disruptors had little to no prior knowledge but asked the right questions and had the right arguments... My line or argumentation does not require much aviation expertise: a heavily regulated market with many uncertainties that put the chance of your investment succeeding at a low percentage, require ALL the investment be made before you can test it on the market is a big red flag; even more when the industry is known for very high costs in the innovation space and you are “disrupting” it; add to that that the return on investments have historically been horrible -e.g., google Cessna, Piper, Beechcraft and a dozen other big players that went bust or were very close to it...