I commented on this issue in a Radio NamePros podcast a while back. If you think about it, you can't just broadcast your own TV channel over everyone's TV Set. People get a limited number of channels with their cable subscription.
With Radio, available channels to listen to work the same way.
With the Internet, anyone can transmit just about anything to people over telecom pipes. It's no wonder that cable companies would like to cash in on the content like they do with other forms of media. I heard a recent radio commercial about cable companies blasting "Net Neutrality" as "Passing the buck onto the consumer". My issue with this, is that if they did start charging the content providers as well as the consumer, they wouldn't have proper motivation to lower the prices on consumer's cable bills to compensate. I think they would probably maximize revenue by charging customers the price that maximized profits and then charge content providers the price that maximized profits.
I also expect that no content provider would get blocked. We've had freedom on the net for so long now, that it would be hard to take it away. Infact, if they did block content, they would lose customers in a heart beat to another ISP which didn't block content.
So, I think they would basically just offer premium services to large companies like Google, Yahoo, MySpace, and YouTube. They would probably pay for the premium (faster download) services to increase customer satisfaction. It could perhaps benefit consumers more by providing motivation for the cable companies to offer premium services which don't currently exist (or hurt them if the current system is neglected and attention is only spent on the premium services).
I think it would cut into larger corporations profits but consumers probably wouldn't be hurt that bad (unless they owned stock in the larger corps).
I've heard rumors that Google is buying dark fiber... I wonder if this is a bargaining chip for them. They could use their own infrastructure to ship data packets around the world, thus hedging them from the impacts of costlier high speed data.
I tend to hope that things stay the same because that is what I've known. However, that may not be the best thing for us all. Sometimes change is a good thing. I'm not sure if I want service providers to keep more money, or for infrastructure companies to get some more because I haven't heard enough analysis on the matter.