I think "Don't be evil" is a slogan of tech employees, not tech entrepreneurs.

I single out Hacker News as being psychologically different from normal software engineers. The focus on Hacker News is money, and many people here see profit as inherently virtuous. Social darwinism, eugenics, authoritarianism, and other extreme right political views are overrepresented on Hacker News, and given surprising amounts of leeway considering the swiftness with which other views are scrubbed away here.