Fat chance enforcing these types of rules/restrictions.
Content is generated by a whole host of methods. Very little (if any) is original. Using an AI to craft a segment of a melody or even the vocals won't really be detectable especially once its gone through the normal blending and transformations. A fools errand just to make the "professional" societies look like they have an important part in the process.
Of course this applies to all forms of art - text, visual, music. And it's just going to get more intense.
(Speaking solely as a programmer who's artistic output is wonderfully exceeded now by the AI "helpers".)