I really don't understand--those channels are free with an HD antenna. I don't know if this is possible anymore, but those channels used to be free through your

I really don't understand--those channels are free with an HD antenna. I don't know if this is possible anymore, but those channels used to be free through your cable cord, even without a cable box. ABC, fox, nbc, and cbs are free. Why pay $35 just to remove adds. Are they including, AMC, MTV, etc? I don't think so or they would say so. Ps. This is a serious question. Please someone help me understand how they are charging for free channels just to drop their ads (presumably)?