If humanity lived at the density of Wyoming (5.97/mi^2), we would have to get rid of 50% of the U.S. population or 98% of the world population, because only 147M people could fit on the habitable land on earth.

So yes, it is and it isn't. The question is how many people want to live in Wyoming-level densities vs. Paris-level densities, given the elimination of any cost constraints.