Google is successful because it provides better results than its many rivals. “Better” as perceived by its users.
A key part of this is decoding the garbage that a typical user types, and converting it into something a computer can search for.
Another key part is downgrading the dross that arises from search engine optimisation.
If Google biased its results for any purpose other than that of the users, it would soon be replaced by a competitor that was providing the wanted results.
An unbiased search would simply turn up all 200 million sites that match your query, in random order. This would render the service, and the WWW, useless.