Length is 100% marketing. There is no commercial market for 15-20 page essays, which would be the ideal length for a lot of business books. (The famous Harvard

Length is 100% marketing. There is no commercial market for 15-20 page essays, which would be the ideal length for a lot of business books. (The famous Harvard Business Review cases are typically this long.) The reason many business books feel fluffy is that these 15-20 pages of solid content are spread over 300 pages to meet the expectations of readers and booksellers.