Real estate is not really a space problem; we have a lot of nice, uninhabited land all over the globe. The problem is that people want to live near denser areas

Real estate is not really a space problem; we have a lot of nice, uninhabited land all over the globe. The problem is that people want to live near denser areas for various reasons and reducing the world population will (probably) only reduce the number of dense areas, but not the housing problem within them.