Well, again, who are you going to attribute it too? given a training image is good for about 1 byte of information, an image would have..... well over a millio

Well, again, who are you going to attribute it too? given a training image is good for about 1 byte of information, an image would have..... well over a million likely contributors. Same as any art an artist comes up with, given all the things they have seen in their life leading up to the image. Placing it in public domain seems like a easy way to stop it being hard core commercialized. And honestly, given the crazy extensions on copyright laws, it seems pretty fair to do so.