Ironically, weights and biases are likely not copyrightable.[0] I looked into this first when the LLaMA model was released on BitTorrent, and concluded that downloading it was perfectly legal. The courts even have controlling precedents that say "sweat of the brow" is not a valid justification for copyright, meaning that the effort these large organizations put into training their models does not grant them protection.[1]

[0]https://news.ycombinator.com/item?id=35121093

[1]https://definitions.uslegal.com/s/sweat-of-the-brow-doctrine...