Sure, but that's not really professionally produced content then. Wiki's and social sites are just users creating content for themselves, which is a fine system, although most wikis (especially the wikia network) is all financed through advertising anyway so it's the same thing.

Paywalled content is going to need to be more than facts, in fact if it's just facts then most news sources are overkill. Rather its the voice and other in-depth journalism that would demand a premium. In this case though there are pretty powerful copyright protection systems in place that it's not really a worry. The same reason why little youtube players complain about stolen videos but not the big studios.