Regarding the above discussion globally, this might be of interest.
Just now, starting in a couple of months, ALL commuters with a Passe Navigo, like a BC Transit pass, card, or whatever they sell now, regarless of zone
will pay the same, uniform ticket price set on the lower than average overall cost,cost scale, I believe,
in order not to penalise people living in distant suburbs, such as Lion's Bay or Chilliwack might be to Vancouver. This is a rather more difficult task for Paris, as the catcment area is more diffuse than for sharply-defined Vancouver.
The Paris catchment area is, of course larger, at about 6 million km2. (This is made more complex by the more distant towns and cities that some people commute to, but it'll have to suffice.
Until now, the Paris catchment area was divided into zone 1 Paris (intra périphérique, and the immediately adjoing zone 2. There were 6 zones in total, the cheapest trasit pass starting at 60€ a month, going to about 110€ a month for people commuting from CDG in the North to Melun in the south... (this is only relevant if you know Paris a bit.)
The total Vancouver catchment, or potential catchment, is along the US border including Ladner, Point Grey CBD/WE, the total NS, Maple Ridge, Dewdney, AggasiZ, Chilliwack, Hope and coming back pretty much along the US Border. This includes EverYTHING contained therein,regarding potential commuter traffic.
The Area for the Vancouver zone came out at, rather surprisingly, 2.5 milliom km2) Naurally Paris is denser, but of you consider that, dividing population into zone, in Paris you have roughly 10 m residents,
and in Vancouver only 2.5m, Paris has an approximated density of 1.67
xy inhabitants to 6m km2, and Vancouver is at an even 1.0
xy inhabitants per km2.
Quite a bit different, and denser in Paris, of course, but Vancouver also has the possibility of developing considerably more than it is between population nodes, given the level of density.

OK, cut to the chase: it is fantastic that in a large metropolis like this there will soon be
NO zones. Same price for everybody, and not with a jacked-up price, either.
So much fairer than the system in Vancouver - and most other cities. Vive la France. Vive la République.