Since the knife vendors were metaphors for AI vendors, is the comparison you want to make "AI vendors & weapons manufacturers"? That's the standard we should judge them by?
> Not sure why knife dealers would be assumed to be more moral than firearms dealers
What I mean is that you _did_ judge them by a standard used for weapons manufacturers. How you react to their actions _is_ your judgement.
But perhaps that is the standard we should use. Weapons manufacturing is a well regulated industry after all. Export controls, dual-use technology restrictions, if it has applications for warfare it should be appropriately restricted.