When I started my career in tech writing, it was the age of the writer. Tech writers tended to work independently on a single book for months at a time. Better, for many, they not only got to write the book, they got to design it and shepherd it through the publication process. At the end of the process a book arrived from the printer and you got to keep a copy — I still have several. It was, from beginning to end, your work, your product, your book.