My understanding is that it's more subtle than that. If you subscribe to no TV services, they can block all channels. However, if you get any TV service from

My understanding is that it's more subtle than that. If you subscribe to no TV services, they can block all channels. However, if you get any TV service from your provider, they have to provide all broadcast channels to you, either un-encrypted, or encrypted with a free cable box for every TV in your house.