It's a very serious issue. I feel like it's been going on with Google for a long while now. I'm 41 now and maybe I'm getting a bit jaded but I find it also curious how there is supposedly so many resources and websites out there and yet I feel like I discover less and less of them.
It's true that it is in our nature like KaiserPro said, but I think in the early days of Google, you'd find out so much more diversity of content because websites both small and big were all appearing in search results.
Which makes me realize... in fact it is the content farms which are part of the problem. They forced search engines to filter more and more of the content in order to provide quality results.. we end up with a minority of high traffic sites and the rest of the voices are difficult to find outside of news aggregators.