Including the state would be odd for the exact reason you demonstrate; a lot of people outside the country don’t know or care, especially with capital cities — who knows what region Ottawa or Canberra are in?
Country largely just makes sense to disambiguate cases like the two different cities a few hundred km apart both named Vancouver.
For US cities it would make sense, though the very largest could be argued to also not include that.
Use case: Configure device for customer in another state, OK like the mailing address state 2 letter code is XX what city? Oh there's a choice of two. The one I've heard of is probably the biggest city. Either way, it comes out OK.
What if you don't know what state something is in? Sol3/US/*City should shell expand on command lines.
Country largely just makes sense to disambiguate cases like the two different cities a few hundred km apart both named Vancouver.