Somebody needs to explain this to an idiot like me. The way I understand it is that they justify the thing by saying that they want people and companies to pay according to the amount of bandwidth they use? Isn't that already the case?
Webhosts already get charged by the amount of bandwidth they consume (e.g. you have a set amount of bandwidth per billing period and if you exceed that, the website goes down or you get charged more), while on the consumer side, Internet access are either metered (in my country, ISP services are still mostly metered and/or pre-paid, since unlimited post paid services are expensive) or unlimited with higher monthly rates (applies to web hosting as well).
As for the ISP regulating traffic, it's not a new thing for me. The ISP industry in my country is very cutthroat, lots of bandwidth shaping going on, like a service provider purposely making connections to rival ISPs slower, capping of bandwidth on certain network sites (which is not surprising since each of the 3 major ISPs are sister companies of 3 major rival TV networks), and P2P is heavily capped (p2p users from the philippines never exceed 150 kBps downstream, unless they have one of the less popular ISPs, or are using a company/school's internet connection).