"Don't be evil" has never really worked, despite best intentions, depending on your vantage point.
You don't need an official Oath or for the company to know or base their employment on such an Oath. Either way, the bottleneck is the employee drawing attention to the company doing something unethical; no Oath has to get in the way of that. There's already a sub-thread on top-secret/weapons/armaments jobs. What about political ethics? And religious? Marriage / gay rights? Porn? "Sexism?"
You don't need an official Oath or for the company to know or base their employment on such an Oath. Either way, the bottleneck is the employee drawing attention to the company doing something unethical; no Oath has to get in the way of that. There's already a sub-thread on top-secret/weapons/armaments jobs. What about political ethics? And religious? Marriage / gay rights? Porn? "Sexism?"