I'm all for believing that there's a scam when there's evidence of a scam (as opposed to this, where the results are indistinguishable from what they would be if Google were acting in good faith, and no other evidence has been presented).

https://duckduckgo.com/?q=computer

http://www.bing.com/search?q=computer

It's a conspiracy, and we've even managed to rope DuckDuckGo into it.