We’ve already seen what happens to the world’s ecosystem when a very small portion of the world’s population lives a comparably luxurious lifestyle, and unless a breakthrough in thermodynamics is achieved in very short order, I don’t see how it can scale to the whole world.
All those new jet setters, car driving commuters, and air conditioned homes aren’t going to come without consequence. I’m not aware of any technological breakthroughs that can enable us to use resources without heavily altering the ecosystem.
If the energy isn't lost to friction then most of it can be recovered. Although I think it's impractical, the Hyperloop concept is one way to reduce friction. Instead of increasing transport speeds beyond current air travel, it could be used at the same speeds but much lower energy cost.
> It’s always been when resources are constrained. For all forms of life.
The comment you're responding to is saying that resources aren't constrained; we're just not using them effectively. That's a political problem and it can be solved only when people believe it can be.