However, I do wonder what the actual practical benefit of (let's say) older versions of claude having their weights released would be. If we're talking about the people of poorer nations, how are they going to use these? Aside the top 1% of those nations, no one there is likely to be able to run the model themselves. Sure, there could be companies that sell it cheaper than Anthropic but that still won't extend access to everyone. The average person, even in richer nations cannot afford a computer that can run claude sonnet 4 for instance.
On top of that you have what Anthropic gets made fun of for - one of their goals is to protect Claude from humans. They are the only AI lab that is showing concern for the AI's welfare. Now, it is debatable whether this is reasonable or not, but that concern would lead a company to be less likely to release their models openly.