While I agree there are plenty of examples for either of those companies which seems to clearly show a violation of basic ethics, does that happen simply becaus

While I agree there are plenty of examples for either of those companies which seems to clearly show a violation of basic ethics, does that happen simply because the scale/size of it or because of the people working there? Do those companies overall do more good than bad? Can your influence/work in those companies result in more positive impact than working for a small company? (simply because of more resources and reach of the bigger company) Here it may depend on your job level/influence in the company, obviously being 1 in 100k rank and file may not have any impact on company policy but as a more senior employee that get access to potentially more resources and larger impact decisions than working at a smaller but clearly more positively ethical company. I guess basic question is, what is the purpose that you are trying to achieve by being ethically aware in job selection and how is it best to achieve that goal? Don't get me wrong, I think it's great for people to consider ethics for deciding where to work but we should also try to not fool ourselves, in the end the reason to do this is to feel better about ourselves (and there's nothing wrong with that!) because an objective look at the potential positive impact we could have on the world at large may yield surprising answers about what the career choice should be.