If we're talking about weaponization, then for sake of completeness let's remember that weaponization of open source is a very powerful business strategy that's been frequently used in the past 20 years, whether to market software, acquire free work, or as direct move, to try and destroy a market some competitor works on.

Some business models - like OSS, and free-with-ads - are like dimension-folding weapons from Dark Forest trilogy: once deployed, there is no stopping them, they just permanently drop a degree of freedom from the universe, inside a shell expanding at the speed of light.