I feel like things are really accelerating regarding AI -- the AI players are slobbering at the opportunity to inflict AI on the rest of us, to the point that AI-generated art and AI-generated prose are going from hypothetical to real-life even as we're thinking about the implications.
Most (if not all) writers are going to see the ability to make a living as a writer vanish even as a figment of a dream, let alone a pragmatic hope.
Somebody somewhere will be feeding an AI all of Agatha Christie's mysteries and out will come a host of new AC mysteries. They'll be able to do that with all big-name/big-ticket writers -- someone, somewhere, will sell their name to it, and off it goes. The same thing'll happen with actors, once CGI gets there.
We'll be seeing current celebrities trading on their fame for AI proxies of themselves. It's all very dystopian.
What it means for most non-famous human writers is obsolescence and extinction.