I don't agree. Self publishing has not only arrived, in some genres it outsells trad pub books.

One discussion: https://mashable.com/article/self-published-authors-making-a...

From that article: "According to Amazon's 2019 review of its Kindle sales, there are now thousands of self-published authors taking home royalties of over $50,000, while more than a thousand hit six-figure salaries from their book sales last year."

And 'self publishing' encompasses more than just Amazon, etc. --there are hundreds (maybe thousands) of authors selling books directly online.