[Paladin2]

I suspect that heavy snows need to be scooped up and dumped in the river. A private firm would need too many permits to be able to operate if the City didn’t want them to.

[Deek]

Most of the snow gets piled up on parked cars, where it seems to immediately turn to ice. To shovel out a parked car, you may well need a pick.

Some of the snow goes into the rivers, but a lot goes into "heated dumpers" that melt the snow into storm drains. As soon as you tried to bring the dumpsters in from a private party, I have no doubt that it would become a victim of a snow-plow accident within a couple of hours.