The Business of Books: The high-stakes world of pirate publishing
historytoday.com
historytoday.com
Audible runs a similar service for audio books.
At that point, what's the point of using a publisher vs. self publishing or using some kind of print on demand service?
Also, certain books in the humanities can have their costs covered by grants, and the publisher might already have staff that are proficient in grant-writing, while authors don't have that savvy or reputation.
Which is almost certainly how the article about a book due to be published in April came to be written.