In short, Google prefers a world where we consistently go to three restaurants to a world where our choices are impossible to predict.
North Korea aside, most authoritarian governments have already accepted the growth of the Internet culture as inevitable; they have little choice but to find ways to shape it in accord with their own narratives - or risk having their narratives shaped by others.
Personalization can be very useful in some contexts but very harmful in others. Searching for pizza online, it's probably OK to keep showing the same pizza shop as your No. 1 choice. I don't see any big political consequences out of that.
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