Experience so far shows that Artificial Intelligence creates the same bland content, overall, as Human Songwriters have for centuries, same 'mistakes', same 'forgettability' as opposed to 'memorability'.
Artificial Intelligence, like Human creatives, occasionally might do something right, and create a hit we all agree is a good product.
The men with money... let us call them... Oligarchs... are gonna do what their money enables them to do.
George Orwell, in his prescient novel, "1984" mentions Winston Smith observing a woman out in the back yard, hanging clothes on the line, humming the latest AI generated tune.
I say, keep on keeping on, creating, instilling your humanness in musical product. Yours will likely always be better listening fare than AI, and have some entree to the marketplace despite what the Oligarchs are selling in bulk.
I doubt you'll be able to block them by any Legislation.
Just keep writing, composing, creating, competing, as if nothing's changed.

There will always be another song to be written. Someone will write it. Why not you? www.garyeandrews.com