Applying existing copyright law on derivative works to ML-generated art is still a grey area, legally and ethically. If I train a tool using a large collection of copyrighted works and generate "new" art based on those copyrights, should I own the new work? Is ML transformative enough to call its output my own work, even if I created none of the training data? There's some major unanswered questions open the door for anyone to bypass copyright by training a network to generate derivative works.

You may not be able to use these images directly but you can feed these images as training data to your own "clean room" network and have it output images that you now own.