I think what you're saying is true from a certain perspective, but I also think that a lot of great progress comes from cross pollination of ideas. If field A solves a problem using method X, but field B has never applied method X then someone who makes that connection and applies X to B can start a mini-revolution in field B. New is pretty relative in that sense, especially if you reflect on Solomonic wisdom: "There is nothing new under the sun."
Maybe it's more helpful for product development teams in mid-size or larger firms... In the realm of bootstrappers & hustlers, most of the advice is SOP, just re-branded.
