The Stigma of Bio Weapons

There were two examples of people killed by American and Russian bio weapons since then but they were both own goals. The last thing either of the cheating superpowers wanted to do was admit that they had them, right? So every time there was a little conflict somewhere, proxy war, in some place, they made this calculus like should we start using bio weapons in Afghanistan or whatever)? They always concluded, no, no, it's absolutely not worth it. Revealing that we have them just for this relatively minor thing. And similarly, if anyone ever tried to go start a private biotech corporation, bioweapon corporation or something, I'm pretty sure that they didn't get very far with their