Uh... Lots of people? That's kinda the problem. Maybe use a search engine. There are plenty of cases of LLMs 'laundering' copyleft code into (often) proprietary codebases. And that's just the most blatant and brain-dead obvious example; the use of GPL code to train commercial models is a bit more subtle and nuanced but no less nefarious, and the laws are currently unequipped to handle that part at all.