The more people are involved in a given task, the more potential agreements need to be negotiated to do anything, and the greater the transaction costs.
Clay ShirkyWikipedia took the idea of peer review and applied it to volunteers on a global scale, becoming the most important English reference work in less than 10 years. Yet the cumulative time devoted to creating Wikipedia, something like 100 million hours of human thought, is expended by Americans every weekend, just watching ads.
Clay Shirky