In this example, someone has come up with a way to build houses $50k more efficient than someone else. Otherwise, they wouldn't be at a competitive price that includes a $50k *profit* per house. (profit = the price of efficiency).

So a person figuring out how to scale their homebuilding methodology by teaching others and providing the *capital* with which they can implement that methodology isn't worth anything to you? I can't imagine a society that could work without these features -- we'd all be re-learning best practices every generation because there'd be no incentive to scale up ideas that work.