Originally Posted by
_Phoenix
Before entering production stage, a brand new B737 replacement has to be designed to the 21st century technology (FBW, better aerodynamics, larger windows, lighter materials, designed for modern process&tooling) and also to be certified to all new safety requirements introduced meanwhile, therefore multiple billions and years behind.
C Series | Technology - Commercial aircraft - Bombardier
787 does all of this.
Nothing Beoing couldn't do on a smaller airframe.