kEiThZ
Superstar
If my interpretation was correct, the GTAA master plan says that a sixth runway won't be needed for a long time.
That plan also has no assumptions of a reduction in aviation capacity anywhere in the region. And Pre-Covid, the consultants report recommended considering Pickering, in addition to YTZ.
Much larger airports operate on less runways.
With different rules, climate, etc.
HFR would take out much demand;
Hardly. HFR only improves substantially on trips to Ottawa. And even that is marginally competitive with air.
Most cities around the world have one main airport,
Metro areas of 6-8 million?