Expanding on your point, a while ago I read a great book on 747 development (by Joe Sutter, who was the lead engineer for the 747) and one surprising thing for me was that Boeing was very much into the supersonic race at the time. The SST project was Boeing's darling. As such it got the top-ranked technical talent assigned to the project, as well as the best tools, management oversight, etc. In contrast, the 747 dev teams got pretty much less of everything, including being dispersed over a large area of corporate buildings. Despite all of that, it still succeeded beyond anyone's expectations at the time.