Mine had one over a decade ago. After graduating, the industry decided that developing everything we just got done establishing was unethical, was the hot topic to innovate for the next decade. I never worked at any of those places and still got burned ethically in much more indirectly unethical product streams in the finance and insurance sectors. To be honest, if there is really good money to be made at this point, there is a safe bet that if you dig deep enough, there is an unethical core to it. Most of my peers assuaged themselves with some variant of "I'm a programmer, not an ethicist, and philosophy doesn't put food on my table. So sadly, the problem seems much more systemic and a priori to the capitalistic optimization function.