> Want to become rich? Make a search engine which indexes the fresh relevant data from the big siloed websites, and ignores the general dead Internet.

That would be a great service, but it certainly wouldn't make you rich. Where's the money going to come from? Google got rich because they acquired an ads platform (DoubleClick) and an analytics platform (Urchin) and started monetizing the vast amounts of data they had. That was years after Google had established goodwill as the best search engine.