Hm. I suspect that the 20/80 rule applies there and "here's our shiny new aircraft design, have fun testing and debugging it for the next 15 years" isn't a viab

Hm. I suspect that the 20/80 rule applies there and "here's our shiny new aircraft design, have fun testing and debugging it for the next 15 years" isn't a viable strategy there. There are often those "vision designs" of wonderful new planes that are developed internally by the major companies, but then never realized. I bet they can easily produce the 20% part themselves in much less time. But maybe it's an illusion and they are really ripe for disruption.