I'm not sure how, in principle, the government censoring the Internet is worse than corporations doing the same. You can argue "corporations don't force you to use the Internet so they aren't infringing your liberties there" (of course in quite a few jobs you are forced to use the Internet but bear with me), but... the government doesn't force you to use the Internet either.
The main difference is that government is WAY more likely and has WAY more incentive to censor and control the internet.
The second difference is that if the government makes a law that censors the internet, what can you do? I guess you could spend 10-20 years working on a grassroots campaign to elect different congressmen and such that will support freedom, though you will have to fight the influence of the MPAA and RIAA on Congress.
In a non-monopolized industry, you can just stop subscribing to the censoring company's internet. If there is enough demand for a non-censored internet (and there is), then another company will most likely be providing that service. If there is a monopoly, it's different, but people have explained how monopolies only come from government already.
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_foolmo_
'It's easy to get yourself in trouble if you start quoting people who don't like you in your signature' - Mods