[eightysixfour]

> To your argument of (paraphrase here) 'it is good enough why innovate'.

That's not my argument, you are putting words in my mouth. My argument is "you better have a good reason to argue the commercial air industry is stagnant because the industry's incremental progress over time has been incredible." Look at this chart: https://en.wikipedia.org/wiki/Fuel_economy_in_aircraft

That's crazy!

The issue with your 737 MAX story is the trade-offs they made - oversized engine without massive recertification or requiring airport retrofits - worked. It is an absurdly successful product despite the early engineering failures. It is the best selling Boeing aircraft of all time and the second best selling commercial airline of all time (to the a320).

Innovation for the sake of innovation isn't worth anything, the current commercial airline stack is deeply optimized and delivers low cost, safe travel to hundreds of millions of people globally. What, exactly, would you like to see innovation on? What trade-offs are you willing to make?

I spent a few years in the commercial airline industry. They have a ton of problems, very few of them would be solved with a revolutionary plane design.