(And sort of odd isn't it? Instead of taxing you and providing you with this service, we'll require you to do it? Seems inefficient.)
Toronto is probably the poster child of that idea but it is actually going away. The city decided they will plow the sidewalks themselves starting this year. While you were “required” to do it, tons of people wouldn’t do it and enforcement wouldn’t be consistent. This would leave you with dangerous sidewalks where the people who need it the most (disabled, elderly) would be stuck walking in the street because the roads for car would be perfectly plowed.
A workaround is to buy your home in a neighborhood without sidewalks.
...or where it doesn't snow.