TL;DR: The big tech AI company LLMs have gobbled up all of our data, but the damage they have done to open source and free culture communities are particularly insidious. By taking advantage of those who share freely, they destroy the bargain that made free software spread like wildfire.
So the issue is that AI strips the provenence of the open source contributors and then the output it spits out based on the data it consumed is not subject to the same open source licensing that applies to the open source projects, and these AI companies make profit from this but the open source contributors don’t see a dime. We’ll that’s kinda always been the case though, so many amazing open source projects get coopted by tech giants like Microsoft and then repackaged as proprietary software for a profit, embrace, extend, extinguish, but back then they needed a team of developers to do that, now it’s more automated I guess with AI
Copyleft software isn’t supposed to just be repackaged as proprietary, though. Permissive licenses, sure - but people know what they were signing up for (presumably) there.