While i don't disagree, that's missing the forest for the trees - the point is having the freedom to share models and continue to open-source.
I'll argue that between stable diffusion and llama 2, there is nothing highly specific that prevents [very] large amount of people from adopting these models and specializing for them own needs.
Yeah but llama2-level AI may be insignificant in power compared to future models, which may be inaccessible to the public. Even assuming the algorithms/code are open, people at large won't be able to create working models.