For utilities its tolerated because there is a massive difference in cost between servicing different users of different usage patterns. There is no way to have a fixed monthly bill for utilities in a way that is fair. If usage didn't incur such huge costs it would be a fixed bill like internet and phone plans.

While providing extra TV channels costs nothing. Even if you are a power user who watches 10x the TV as a normal person, it doesn't cost the company anything extra.