Publishers know more about selling books than the writers. Harper and Row, well known publishers stumbled on a report written by Tom Peters and Waterman and approached them with the idea of publishing it. Tom bluntly said it was a report and not readable and they could not hope to sell even 10,000 copies to recover their cost. The publishers differed and securing their permission, printed it. About six million copies sold in the following years. For non-fiction, it is remarkable.