The tech will ALWAYS be better ten years out. You have to pull the trigger sometime. The 737 first flew in 1967. That’s 52 years ago.

To put that in perspective, 52 years before the 737 flew the most advanced fighter plane on earth was the Fokker Eindecker sporting a single Spandau 30 caliber machine gun. It’s 100 hp engine had a top speed in level flight of 76 KT.

Boeing screwed the pooch. If they survive it will only be because they are too big to fail - not on merit.