It's even worse than that. Cable companies have to pay a portion of that add-on fee to the channels for their content. In this case of (not) throttling bandwidth, the ISPs are keeping all of the fees since you're not paying for the content, just access to it.
http://www.ohgizmo.com/2009/10/29/net-neutrality-what-it-cou...
Websites being reduced to cable-like add ons. Just terrible.
Edit: I followed the chain of blog spam attribution all the way back to the original source of the Net Neutrality graphic:
http://www.reddit.com/r/pics/comments/9yj1f/heres_a_new_scen...
Edit2: Another similar example: http://images.appleinsider.com/netneutrality091808.png
Apparently this was a big deal in 2009.