True, but that's also true for a number of those other cities. Ottawa has both Kanata and Hull for example (and possibly Orleans depending on what you consider Ottawa). My aunt and uncle own a berry farm within a short drive to Ottawa as well so there's a number of small towns around it (within about 30 minutes drive or so).
My sister lives in a city right by Montreal, but most people would consider it to be Montreal if you don't live in the area.
"Ottawa has both Kanata and Orleans for example (and possibly Hull depending on what you consider Ottawa)"
NCR, or Nation Capital Region refers to Ottawa + Gatineau (Hull is part of Gatineau) and surrounding areas. [0]
However, for those who aren't from Canada, Gatineau is in fact in the Quebec Province, and Ottawa in the Ontario province. They are separated by a river. You can walk over the bridge from Downtown Ottawa to Gatineau in about 5 minutes.[1]
In terms of housing prices though, Gatineau and Ottawa are completely different animals. Even inside Ottawa, the range is quite large.
I was more thinking about that Hull and Kanata are both enough outside Ottawa that they're in the NCR, but not Ottawa. But, Orleans is right by the main part of Ottawa so I know a lot of people who just thought of it as Ottawa.
I lived in Ottawa for about 3 years (and my aunt, uncle, and cousins all live in the area).
My sister lives in a city right by Montreal, but most people would consider it to be Montreal if you don't live in the area.