Win-win for the city.
The whole notion of treating sidewalks like a special enhancement is ridiculously antiquated, as are the laws in Snowbelt areas expecting individual owners to shovel the sidewalks in front of their properties. You and I both saw how ridiculous that was in Boston-- every few feet the terrain changed as you navigated from one lot to the next. Joe Schmoe shoveled off the whole sidewalk, Jack Sprat shoveled only a narrow pathway, and both of them piled snow on the edges of the curb cut. It would be so much better for all concerned if the cities/towns plowed the sidewalks right after plowing the streets.