Fun read but a bit too much fluff? I was a design MechE for about a decade and I’m by no means as successful as the OP. But I have worked on a 5 person design team that had an annual net revenue of 30M and another job where I worked on 25M+ contract with just a team of 2, me and my mentor at the time. End of the day, hardware execution is hard and there’s a ton of product development cycle theories, you just need a culture with what I call good engineering discipline. Good communication, good documentation, and realistic milestones with accountability.