I don't think any professional community is aligned on how to think about ML-generated content yet. We don't know how to apportion rights between the data owner

I don't think any professional community is aligned on how to think about ML-generated content yet. We don't know how to apportion rights between the data owner, the model owner, and the end user, and I don't think existing copyright law is ready for it. At least for software, I think the way forward is for the next generation of software licenses to explicitly state whether the code can be used to train ML models and what those models can be used for. Without explicit language, we'll be squabbling over interpretations of fair use. There's going to be some big cases here. It's going to end up in the Supreme Court sooner or later, and if it were to go there today I think I know what they'd say.