I would agree with you if there was a button I could click to turn it off. Their algorithms aren't infallible by any means. Plus, ultimately they are a business and trying to sell, so they are going to eventually skew results towards things they think I may be willing to buy, rather than things I want to know. I think G is more susceptible than MS, but only because MS does make a living selling other stuff.
I'm not saying it's evil or wrong, just that if my first results don't appeal to me, a simple measure that might work for me would be to turn the filter off. Anyway, they could learn more about me if they let me do that.
Great! Put a button on the search page. Will "pws=0" allow the engine to "learn" from my corrections? I'm pretty sure incognito won't. But allowing me to "correct" the personalization might be useful to you.
I'm not saying it's evil or wrong, just that if my first results don't appeal to me, a simple measure that might work for me would be to turn the filter off. Anyway, they could learn more about me if they let me do that.