Comment by nske

I don't think things are as simple as that. Maybe for example there are some technological or scientific breakthroughs with cross-domain application that come as a result of work that at present is practical only with the resources of giant companies like Google/Facebook/Microsoft. I think it's fair that engineers and scientists get to work for whatever employer they choose, doing what they do best and advances their expertise, without being judged negatively. I think the acquired experience and knowledge itself will leak, one way or the other, in applications that bring a net positive, even if the activities of the specific employer are not directly positive. Morally-wise, I think the onus shouldn't be on the workers any more than it should be on the consumers, so someone working in the fossil industry shouldn't be considered more responsible to the climate change than someone consuming fossil fuel.