Mere habitable area is already not the main constraint by far. Farmland isn't even as increased yield has lead to a decrease and market breaking surpluses for almost a century with lesser yield boosts. If habitable land was the constraint we would see ruralization - instead we see urbanization even when policies favor the suburban.
Well then you could solve Malaria by moving away from infested places, I suppose.
Not yet convinced that land use is actually shrinking, but will google. And what about the rain forests? Why burn them down, if there is enough land already?
