AI is unsafe if it doesn't answer to the board of directors or parliament. Also paperclip maximizers, as opposed to optimizing for gdp.
Corporations don't like to kill their own stakeholders; a misplaced minus sign, which has happened at least once*, and your AI is trying as hard as possible to do the exact opposite of one of the things you want.
* https://forum.effectivealtruism.org/posts/5mADSy8tNwtsmT3KG/...