You're PAYING for the disinformation. The accountability is that you drop cable television in protest.
Or you don't watch those channels, and their ad revenue, which is tied to their ratings, goes down.
Or you contact the advertisers on the channel and tell them you will not buy their product if they continue to advertise on the channel.
That's like saying it's OK for a hospital to violate rules and it's up to me to find a new one. There are certain responsibilities with the 1st amendment, it is not absolute as you know.