Why not? Slowing down / halting biological weapons research mostly worked. Yes there have probably been modest sized defections here and there, but the pace of bioweapon development is a crawl compared with (a) what is possible with science already, and also with (b) the pace of bioweapons development from 1910 to 1970.
Bioweapons are good for .. war. Agentic AI is good for changing your economy, strategic advantage, labor explosion and making more effective Agentic AI. They are not the same category of thing.