quadraginta
Becoming Beth
Could they block sites they don't like? In principle, yes. Is that a serious concern? Not really. That approach is likely to backfire (see: Streisand effect), and it's trivially easy to route around anyways with proxy servers, Google cache, and even just reposted content. ISP's haven't made any moves like that yet, there's really no reason to think they'll start doing so, or that they won't get spanked (hard) by consumers if they do.
What, exactly, do we consumers spank them with?
If I want to take my business away from TWC around here my only practical alternative is DSL
That isn't going to do much to improve my bandwidth.
I pay extra for higher speed service. My connection has never reached anywhere close to the the promised capacity. Not ever.
But if I don't pay the premium it would be even worse. With the devices we use in our household (pretty much average) we are pushing the usefulness of what bandwidth we do manage to achieve.
So tell me how to spank TWC. So that they would notice, that is.