The second essay in David Graeber's book "The Utopia of Rules," which I think is called something like "On Flying Cars and the Declining Rate of Profit," has an

The second essay in David Graeber's book "The Utopia of Rules," which I think is called something like "On Flying Cars and the Declining Rate of Profit," has an interesting discussion on why the future you described (and, let's face it, were more or less "promised") never came to be. I'd say it supports the conclusion you've already intuited.