Google received 6% of all traffic worldwide. Meanwhile, 29 other giants, including Facebook, Yahoo and Microsoft, rounded out the top 30% of traffic—meaning that these days, a few big sites are getting a lot of the Internet’s traffic. Considering that only 52% of Internet traffic is web-based, this is even more significant. (The other 48% is made up of email and private networks. And did you know that P2P constitutes 18% of Internet traffic? That’s down from 40% two years ago.)
http://www.marketingpilgrim.com/2009/10/google-1-site-worldwide-with-6-global-traffic.html
The main reason people like the concept of forming an SEO Monopoly is leverage. Traditional SEO is like putting all of your eggs into one basket. An SEO Monopoly is equivalent to owning multiple baskets. The odds of a the searcher finding out about your company or service are much greater if you are running an SEO Monopoly.
