Google's policies are counter-intuitive to how the World Wide Web was designed. You are supposed to link to other sites that you like and you want them to link to you as well. Google's policies lead to a non-linking which means that Google does all of the associating in their database to find which sites are like each other and should be grouped together, which pushes out development of new search engines because there will not be a link profile for other engines to use, thereby furthering Google's monopoly.