Who (is old enough to) remember all these search engines which were supposed to revolution the Internet, and end Google's supremacy ?
Randomly, I remember all the buzz (this word didn't yet really exist back to that time), about Teoma, WiseNut, Grub (different from GNU Grub), and more recently Wikia Search.
There was also a search engine, but I can't remember the name, the logo was like embroidered texture.
Personally, I had a huge interest in WiseNut (even if I don't remember why!)
Even if it seems impossible, I bet that one day, something will come and surclass Google "somehow*". I know it's hard to believe, but from my experience everything is possible, anytime.
* the somehow might also come from a modification of how people are using the Internet, for example.