The main users of Canada Post are businesses anyway: junk mail. I get maybe one actual letter from a non-business per year. I doubt my experience is out of the ordinary. Subsidizing Canada Post out of tax revenue would just be subsidizing those businesses that use it to flood our boxes with fliers and coupons.

If we’re going to subsidize it then we should probably move to weekly delivery, rather than daily, and stop delivery of junk mail altogether. But that would cost a lot of postal worker jobs, which seems to be the main purpose of keeping Canada Post in existence.