When FX (I think it was them) was off DirecTV last year they completely removed their shows from the internet for everyone. Didn't matter if you had Dish, Comcast, Verizon, who your internet provider was, etc. nobody could watch those shows online. They caught a lot of flack about that decision too.
CBS seems like they are trying to make it a bit more fair by blocking anyone with a Time Warner Cable IP address. While this is better than blocking everyone, it does still kind of screw over people like Milkman who uses Time Warner Cable for internet, but not for TV service. He's saying he should still be able to watch those shows online, just like someone else with DirecTV service and a different internet provider like Comcast, or Frontier, etc. can. I agree with him, he should be able to but that's evidently not going to happen right now.
What all these channels need to do is start treating it like HBO Go and some of the other channels. You log in with your account credentials for your TV service, they can then check that to verify you subscribe to that channel and then they give you access to the shows. It doesn't matter what internet provider you are using (as long as you are in the U.S.A.). If CBS were to do it this way Milkman could log in with his DirecTV login/password and CBS would be able to verify that he is a DirecTV subscriber with access to their channels, so they would give him access to the shows even if he was using a Time Warner Cable IP address. Meanwhile people with Time Warner Cable TV service would try to log in with their Time Warner login and password and they would get a screen telling them that they no longer have access, they should call Time Warner and complain or switch to a different TV provider etc.
Sometimes when I reflect back on all the beer I drink I feel ashamed. Then I look into the glass and think about the workers in the brewery and all of their hopes and dreams. If I didn’t drink this beer, they might be out of work and their dreams would be shattered. Then I say to myself, "It is better that I drink this beer and let their dreams come true than be selfish and worry about my liver."
-by Jack Handy