I would suspect that for those wanting out of Toronto, a "massive condo" would be the last thing they want.
Most small towns have neither the infrastructure nor tax base to support anything close to something like this. I suppose a developer could pay for everything required to support this, from upgraded water and sewer (assuming the town has a sanitary system) to fire services, then pass that cost on to the buyers, or the buyer could buy their own lot , maybe on a lake, for fraction of the cost.
I people are expecting the Northlander to begin some kind of long-distance commuting boom, they may be disappointed.