Picture how YouTube has an optional monthly fee to view certain features. ISPs want a cut of the action and plan to charge extra for you to access sites you visit. I pay $6 a month to Funimation to view uncut, dubbed anime. If Funimation does not negotiate with Comcast to be included in their "premium" service package, they'll allow access to the site at dial up speed instead of high speed. It's to prevent small businesses to compete fairly.