They also reap the benefits of AI researchers across the world using Llama as a base. All their research is immediately applicable to their models. It's also likely a strategic decision to reduce the moat OpenAI is building around itself.

I also think LeCunn opposes OpenAI's gatekeeping at a philosophical/political level. He's using his position to strengthen open-source AI. Sure, there's strategic business considerations, but I wouldn't rule out principled motivations too.