Google is supposed (SUPPOSED) to serve up closest to what you search for. SEO is the antithesis of this - it games the system to get a given website closer to or in front of your eyeballs even if it's content is less relevant. And Google has allowed this to continue (or more likely encouraged it on the down low because businesses that are SEO obsessed are more likely to be send money Google's way) because Google isn't a search engine anymore - Google is an advertising company with some internet services slapped on. Google 'search' is just a clown face for one of their advertising strategies. It doesn't serve up what's relevant - it serves up as much results that generate it revenue as possible without being so obvious about it that users get pissed off and switch search engines.