This mostly focuses on the licensing part, but really, FOSS devs will also be able to produce more FOSS and license it differently, perhaps under no-AI-copyleft licenses.
Anyway, the whole idea behind FOSS is freedom and effectiveness (by standing on the shoulders of giants), and none of that gets invalidated in the AI/LLM world.
I think the opposite - software patents may not survive the AI era, and the open source (or public domain) will prevail.
FOSS has been here for a long time, and it will be here for a long time. It's often driven by self-motivation. Let's instead focus on the AI bubble that's 17 times the size of the dotcom bubble[1], and kept inflated primarily by the Big 7 playing financial merry go round.
[1] https://edition.cnn.com/2025/10/18/business/ai-bubble-analys...