[cyberax]

In a functioning economy, people won't be feeling pressure to move into a handful of population centers.

Canada has PLENTY of free space for construction, and modern construction is pretty cheap and efficient. But economic forces are concentrating the growth in a few areas. Well-intentioned efforts to force "affordable housing" and "walkable neighborhoods" make these forces even worse.

The root cause fix is to stop the economic forces that pack people into ever smaller areas.

[amanaplanacanal]

People have been moving from rural areas to cities since the beginning of the industrial revolution. People want to improve their economic lot, and that is the most likely way to do it. I didn't know of it is even possible to stop that in a capitalist society.

[BlueTemplar]

And even before, but cities used to be much more deadly.