If we compare these two articles, we may see it has some probability: 'Larry Page, Google Look Into AI:' http://www.webpronews.com/topnews/2007/02/19/larry-page-google-look-into-ai and 'Artificial Intelligence as a Positive and Negative Factor in Global Risk' http://www.singinst.org/upload/artificial-intelligence-risk.pdf we will see that Google has all brain power, idea power, will power and computer power to do it soon. and all will be happy. Alexei Turchin.
No they not gonna take power of the world! (at least not this 3 years XD) they need more than that to develop their strategy and building a small empire. At least till we can not live without google (like many of us now )