Well right now people can buy super cheap $9 a month DSL service that provides very basic speeds. The difference right now is that the user of that service can decide where and how they use that bandwidth (assuming it's all legal).
So if all they need is IRC, Email, and Github, then that's perfect for them. Why would I let them (ISPs) decide how to bill me for the places I want to go on the internet?
I believe some places have much larger prices for businesses, and those that want to offer free wifi. Getting internet through phones is also very expensive. And not everyone has access to DSL.
So cheaper albeit restricted internet would be very welcomed by many. And if you don't want it, then don't buy it. It's just another choice.