I believe municipal waste is collected and sorted by non-government entities in most North American cities. Currently, some major Canadian cities are shifting away from city-run union-laboured entities.
Knowing this, it would be hard to imagine WM or any other corporate residential waste hauler is going to redirect their P2O fuel back into municipal use. Just seems overly complicated. I imagine it's easier to simply sell the fuel to large fuel retailers or manufacturers (as JBI is doing now) and pass on most of the savings to the municipality when their trash contracts come to renewal.
Just thinking that a having firetrucks and ambulances lining up directly to fuel up from a P2O spigot might involve a bunch of unique permitting.