On the podcast with Dwarkesh Patel, he was quite explicit that he believes that open-sourcing has worked out for them in the past and they're interested in it i

On the podcast with Dwarkesh Patel, he was quite explicit that he believes that open-sourcing has worked out for them in the past and they're interested in it in the future but they'll only do it so long as it helps them. If they make something awesome that it would be worse for them to release he won't release it. And the license is anti-competitor (if you have 700 million users or more, you can't use Llama) so he's quite clear that this is a business decision.