Why should a startup or tech goliath worry about concerns such as not exploiting users when people can examine the source code? When members of the coderati can

Why should a startup or tech goliath worry about concerns such as not exploiting users when people can examine the source code? When members of the coderati can customize changes, live in private clouds, and protect only themselves? What I'm about to say is probably obvious to most HN readers, but I'll say it anyway in case the author is reading the comments: right now the large majority of commercial software is closed-source, and teaching everyone to code is probably not going to change that. Even if it did somehow change, and there were a bunch of eyes looking over all the software that companies wrote, it would probably make it an expensive PR blunder to not implement privacy best practices, etc... you wouldn't want your software's failure to implement proper protections to be a top story on HN.