According to the expert of
Bookwriting bureau the writer is the person who writes a story. The storyteller. The author. A storyteller cannot be an addressee of any brand. This is why the author has been termed as the biggest customer of book writers.
Since the writer is the major customer, much literature would be written. Some authors would publish their memoirs. Others would write short stories. These are the personalities that we have known and everything is an indication that the writer has strong professional writing skills.