It's just that people are somewhat rational. There are no big wins left in bridge building, so there is no justification for taking big risks. Also, in most s

It's just that people are somewhat rational. There are no big wins left in bridge building, so there is no justification for taking big risks. Also, in most software project failures, the only cost is people's time; no animals are harmed, no irreplaceable antique guitars are smashed, no ecosystems are damaged, and no buses of schoolchildren plunge screaming into an abyss. Your software startup didn't get funded? Well, you can go back and finish college.