Why not start Internet-K(nowledge)?

The Internet was concieved as a knowledge sharing network from ARPAnet, and within a decade was saturated by commercial interests and snake-oil salesmen (spammers) because of it's inherent lack of controls. Since an Internet-K would be based on thesame framework, it would take a Hurculean effort to maintain content purity and would necessarily need some sort of commercial financial support (opening up abuse of information by "spinning" the knowledge base to the advantage of corporate sponsors) or be restricted to a paid-membership pool which would then restrict access to the "haves" i.e. credit card holders with the means to pay the dues, and excluding low or no-income earners trying to better themselves , or those who do not wish to be in debt to credit companies because of personal freedom or lack of willpower to stop buying (e.g. ME).
I'm not saying it can't be done, just that it can't be done purely. It will simply be an echo of the Wild Wild West that is the present Internet.

Personally I think it would be a great resource if it could be setup but maintaining the purity of the content would be a nightmare because as unfortunate as it is in today?s society people are always trying to exploit systems and they will always find a way to do just that, its just about as futile as trying to remove pornography from the internet as fast as you stop one source ten more take its place. The only way you could maintain a semi-pure content on such a system would be to get users to pay to be a part of it but it would have to cost enough to discourage people from using it for purposes other than it was designed but not to the extent where it discourages genuine users. In short ist a nice dream but I cant see it becoming a reality soon.