* Bloomsbury's focus on children's literature: Bloomsbury had a strong reputation for publishing high-quality children's books, which was important to Rowling as she envisioned Harry Potter as a children's series.
* Their belief in the story: Bloomsbury editor Barry Cunningham was immediately captivated by the story of Harry Potter and saw its potential. He championed the book within the company and secured its publication despite initial hesitation from some other editors.
* Their willingness to take a chance on a new author: Rowling was an unknown author at the time, and many publishers were hesitant to invest in her manuscript. Bloomsbury, however, was willing to take a chance on a promising new voice.
* Their commitment to marketing and promotion: Bloomsbury understood the potential of the Harry Potter series and invested heavily in its marketing and promotion. They launched a comprehensive campaign that included book signings, interviews, and a strong online presence.
It's worth noting that Bloomsbury initially offered a relatively modest advance to Rowling, but their commitment to the project and their belief in her story ultimately proved to be invaluable. Their support helped to propel Harry Potter to global success, making it one of the most beloved and bestselling book series of all time.