There were similar debates about photographs and copyright. It was decided photographs can be copyrighted even though the camera does most of the work.
Even when you have copyright on something you don’t have protection from fair use. Creativity and being transformative are the two biggest things that give a work greater copyright protection from fair use. They at are also what can give you the greatest protection when claiming fair use.
See the Obama hope poster vs the photograph it was based on. It’s to bad they came to an settlement on that one. I’d have loved to see the courts decision.
As far as training data that is clearly a question of fair use. There are a ton of lawsuits about this right now so we will start to see how the courts decide things in the coming years.
I think what is clear is some amount of training and the resulting models fall under fair use. There is also some level of training that probably exceeds fair use.
To determine fair use 4 things are considered. https://www.copyright.gov/fair-use/
1 Purpose and character of the use, including whether the use is of a commercial nature or is for nonprofit educational purposes.
This is going to vary a lot from training model to training model.
Nature of the copyrighted work.
Creative works have more protection. So training on a data set of a broad set of photographs is more likely to be fair use than training on a collection of paintings. Factual information is completly protected.
-> Amount and substantiality of the portion used in relation to the copyrighted work as a whole.
I think ai training is safe here. Once trained the ai data set usually doesn’t contain the copyrighted works or reproduce them.
Effect of the use upon the potential market for or value of the copyrighted work.
Here is where ai training presumably has the weakest fair use argument.
Courts have to look at all 4 factors and decide on the balance between them. It’s going to take years for this to be decided.
Even without ai there are still lots of questions about what is and isn’t fair use.
It comes down to how transformative the work is. They look at things like how much of the existing work you used and how much creative changes were made.
So grabbing your 9 favorite paintings and putting them in 3x3 grid is not going to give you fair use.
Cutting out sections of faces from different works and stitching them together into a franken face could give you enough for fair use if you made it different enough.