The mistake you are making is in thinking that the future of media will rely on the same infrastructure as what it’s been historically.
Media is evolving from being a product, where copyright matters in protecting your product from duplication, to being a service where any individual work is far less valuable because of the degree to which it is serving a niche market.
Look at how many of the audio money makers on streaming platforms are defined by their genre rather than a specific work. Lofi Girl or ASMR made a ton of money, but there’s not a single specific work that is what made them popular like with a typical recording artist with a hit song.
The future of something like Spotify will not be a handful of AI artists creating hit singles you and everyone else want to listen to, but AI artists taking the music you uniquely love to listen to and extending it in ways that are optimized around your individual preferences like a personalized composer/performer available 24/7 at low cost.
In that world, copyright for AI produced works really doesn’t matter for profitability, because AI creation has been completely commoditized.