[errantspark]

Not OP, and I'm not sure I advocate for drawing such hard lines, but I hold a similar enough view that perhaps this will be of interest to you.

I do harbor similar opinions about people who have previously or currently worked for the government, or any organization that behaves in a way inconsistent with my ethical framework. I strive to see things as close to the shade of gray that they really are and act accordingly.

I more or less believe in free will and thus the responsibility for one's actions is one's own. The world is complicated and actions must be viewed in context. My opinion of someone who works for Google as a lead on their ad-tech will be worse than someone who works for Google X or someone who's on their first job out of college. My opinion will improve drastically if they leave Google on ethical grounds, or show remorse for their time there as an ex-Googler.

I think that on the surface level there are things big tech does are positive for society but the second and third order effects are frightening and negative in ways that are hard to bound. There's no way I can see to disentangle that from your personal responsibility for your actions that serve to advance their aims.