> Efficiency in of itself is not a useful work product. To game theory it - if you had an unlimited source of literally free energy, no one would waste time or effort on gaining efficiency. They would be working on making new products and services.

But we don't have an unlimited source of free energy - energy efficiency has been a goal of much of the developed world since the 1970s, for example the US:

https://en.wikipedia.org/wiki/Energy_conservation_in_the_Uni...