Re: Isn't all engineering progress like this?
Yes; if you think the Spitfire was the icon of WW2 you'd be surprised how well designed it was that by 1939 they still had to find a way of producing them. Kind of highlights British Management to think that the RAF thought it was so good by then they ceased all thought of alternative specie.
After that we invented the motor bike and did it so well that everyone was the same one. And continued being the same one until the motor cycle industry went broke trying to sell motorcycles that didn't work in the rain.