Except with computers, they don't need to eat or sleep, converse or attend stand-ups.
And once you're able to draw that one picture, you could probably draw similar ones. Your own style may emerge too.
Just thinking. Copywriters, students, and scribes used to copy stuff verbatim, sometimes just to "learn" it.
The product of that study could be published works, a synthesis of ideas from elsewhere, and so on. We would say it belonged to the executor, though.
So the AI learned, and what it has created belongs to it. Maybe.
Or, once we acknowledge AI can "see" images, precedent opens the way to citizenship (humanship?)