I would add utilities to that list, at least to a certain extent. It's impractical to have multiple electricity/water/sewage grids in the same city.

Competition?

Although I've never had the option to choose these utilities in the cities I've lived in. I haven't lived in a ton of cities, but enough to wonder.

but the consumption of utilities varies great from household to household and it would be abused. but a capped subsidized amount would make sense.

yes, the grids should be the same company, but who bills you varies.

Education

yes that's another one.