Earlier quoted context omitted.
What about this vantage point leads you to say no when Narus asks you to help with their spy software or whatever?
It's categorical rejection. Instead of opening up that venue and having to navigate the murky waters of cognitive dissonance and moral obligations against lucrative opportunity, you simply don't open the door. You stick to a client base that is meaningful (relatively so) but not highly impactful and potentially dangerous down the road.
To call this position as "non-participation" or "categorical rejection" is intellectually dishonest, and to say this stance is some kind of blanket protection from future ethical considerations is borderline trolling.