The fundamental problem here is not one of economics, but of politics. You can't live in a stable, dignified manner without paying to be part of a state-run monopoly (land ownership), so everybody who can does, so land titles (note the word) become absurdly expensive.
There is no real connection between land and living space - multiple story housing exists, and if housing was built to a reasonable density, there's more than enough land for everybody to live in whatever size house they could afford to build.