

The reality is that statistically you are more likely to win $1 million in the lottery than to become an author in the US who can live on their income from writing fiction. It does still happen but the people who’s work leads them to become full time authors are extraordinarily lucky, talented, hard working, AND again, lucky.
So you have to write for the joy of writing and expect to have a day job. And if that writing makes money, that’s great and you should keep doing as much of it as you can. But please accept that it’s not going to be your income driver for the foreseeable future.
This was true even in the 90s I’m sad to say. It’s one of the reason I didn’t pursue fiction writing as a career 30 years ago. I don’t think AI will replace any working authors because poorly written slop and computer generated text are both a lot older than today’s LLMs craze.
The field of authorship has been in a slow decline for a long, long time. It has a lot to do with the way the book Publishing industry was run in the middle and later half of the 20th century. We stopped valuing authority and authors and it became a less valuable occupation. This happened to teachers and a lot of other thought-based fields too.