The entire culture of the United States from all the art, to all the technology, to all the food to all the music is sustained by this same energy.
It is not sustainable for everyone in the world to use the same amount of energy that is used by the United States. This is literally the definition of zero sum.
In fact it is well known that entire civilizations have fallen because they've used up all available energy reservoirs. The most famous example is the Rapa Nui people on Easter Island. Easter Island collapsed because the situation was not only zero sum but even negative as high entropy energy is not useful to any participant in the game.
What people don't realize is that the economy is limited by physical actuality. It is not simply supply, demand and your limitless "imagination" on what you can potentially deem as "valuable". Supply and demand alone is a short sighted measure. The better metric for intrinsic value must include energy/entropy in the equation.
There is a limit and that limit practically effects everything around you.