I make no argument with your position (in fact fully agree you should vote with your wallet in this case) but I think it should be pointed out you most certainly gave consent to allow them to use your network when you agreed to their terms by using their service. I can't imagine anyone who reads every line before they sign up for a service or install software so I understand why you feel the way you do. Objectively, to me, it feels like more of a moral gray area than completely immoral.