That's interesting. However, presumably the consequences of censorship on the censored individual can be equally detrimental whether it is perpetrated by the state or an individual/corporate entity?

For example, what happens if a company makes a product with a flaw that is literally killing people. Are they justified in removing a post from their web site forum that points this out? By your argument, in law, the answer is 'yes', but how does a user of product X feel about this?