Web fiction, freely produced and distributed by "consumers" already existed prior to 2019. There are thousands of novels you can read that people produced for their own enjoyment, some even managed to make money off of it via patreon or Amazon's Kindle direct publishing.

This is slightly different than web fiction. Text generation is arguably the cheapest and most “ready” medium for content production in the current AI wave.

You can speak a world into existence, entirely customized to you’re preferences, and interact with it.

You should suggest some!

I recommend Super Supportive[0].

[0]: https://www.royalroad.com/fiction/63759/super-supportive