> Unless everyone is trying to live in Vancouver and Toronto

They are, pretty much.

> Do you not have enough construction workers to build houses?

I don't think most people understand what's going on with Canada. Relative to their population size, the number of immigrants they're bringing in is absolutely insane. 500K+ a year with no signs of slowing down. And those people all need housing TODAY. Canada needs to commit to an absolutely massive, never-ending nationwide construction project to keep up with demand.