This is an extremely vague requirement. Potentially killing their brand name among developers and potentially initiating a slow long decline into irrelevancy certainly counts as not acting in their shareholders' best interests. When google first started, their "don't be evil" mantra was one of the main reasons they succeeded, so not doing unethical shit is in their shareholders' best interests.
He's right in that they're a company, but not that the solution to this problem is to "kill Google."
Much easier and truer to the problem is to "kill" this expectation people have that the magic of good-natured leadership will create companies that dutifully remain bound to arbitrary constraints as "don't be evil" or "not doing unethical shit". It's just blissful daydreaming.
Much better would be to collectively gravitate around community alternatives. You have most of the tools in front of you (open-source, remember?), but you decide that Google's 'already won' and think of yourself as reliant upon them (thus complaining when they don't do things your way).