Basically, LLMs have reduced the incentives in doing open source.

If you go with agentic route, randos with money to spare on latest models, beat you. If you go LLM-free, AI corpos say "all the better for us! More free untainted dataset!"

I'm a perfect example. I'm nearing the first functional release of my entirely handwritten Linux-native mod manager, and I'm not sure if I want to open source it or not. I love the concept of FOSS software, and it's nearly the only kind I use when possible, and I would love to give back to other humans. However, I'm not interesting in doing free work for megacorps that simply want to see me out of a job for their benefit, and open source is currently looking more and more like that.

Humans are so lazy and obsessed with cost-cutting, efficiency, and "line go up" that we'll willingly walk ourselves into such a bleak inhuman future.