If you write a book and go to a publisher to print it, that's independence. You wrote the book on entirely your own terms
If the publisher pays up front for a book, or pays you to edit a book to their standards, that's not independent
If you write a book and go to a publisher to print it, that's independence. You wrote the book on entirely your own terms
If the publisher pays up front for a book, or pays you to edit a book to their standards, that's not independent