Philosophically, defining “evil” requires defining “good” first, and a definition of “good” depends entirely on one’s notions of origin, meaning, morality, and destiny — one’s worldview.
In google’s case, it’s probably better business to simply remove the motto than to risk offending large groups of people in the quest for philosophical rigor.
Philosophically, yes. But moral relativity does not hold well due to the existence of culture. For western countries, no one can defend the morality of slavery or genocide. While those are pretty extreme, we have also collectively (democratically) decided that screwing over customers for your own profit is also not moral and should not be allowed. That's why antitrust law exists.
> And remember… don’t be evil, and if you see something that you think isn’t right – speak up!