Substantive content is going to become the new vinyl. Sure, it will still exist. As a niche. You won't be able to find much of it.
It's like the indignity of Google replacing customer service with algorithms knowing that it's less effective, but not caring because it's cheaper and it scales. But now it's about to be applied to our entire society.
For every artist using generative AI to find a new way to be creative there will be 50 companies using it to give us a worse experience that saves them money, and with it becoming the new norm they don't have to worry about losing business from it.