Honestly? We should discourage continued population growth and transition to a sustainable way of living (I especially mean not depending on economic systems which rely on eternal population growth and which focus instead on long-term stability).
In the current real world? You build vertically as much as is reasonably comfortable and expand outwards by investing in public transit and in housing growth outside of city limits. At the same time, start seriously working on point number one.
What do you do when your population outpaces your land mass?
Honestly? We should discourage continued population growth and transition to a sustainable way of living (I especially mean not depending on economic systems which rely on eternal population growth and which focus instead on long-term stability).
In the current real world? You build vertically as much as is reasonably comfortable and expand outwards by investing in public transit and in housing growth outside of city limits. At the same time, start seriously working on point number one.
What Drusas said