> Unlike Musk's HyperLoop, the barrier for software is not materials and resources, it's simply minds. If you're working on a crappy, bloated codebase it's because some business person likely accurately assumes that a rewrite would be risky and slow (b/c of the supply and quality of labor). <

No, the business person knows it will cost money to rewrite and simply doesn't want to commit the resources. It almost certainly has nothing to do with the supply and quality of labor.