It's more insidious than simply bundling together access to certain websites. The main way that ISPs extract $$ out of content providers is by charging the cont

It's more insidious than simply bundling together access to certain websites. The main way that ISPs extract $$ out of content providers is by charging the content providers to peer to their network. If there isn't a recurring peering agreement in place, the ISP will let the content provider's peering interface overload which drives service quality down. Of course, the ISP ensures /their/ content provider is always on an interface with plenty of bandwidth to spare.