Avoiding Saturation of the Market: In the early 1980s, Stephen King was releasing multiple novels per year under his real name. As he was already producing a lot of content, using a pseudonym ensured that the market would not become oversaturated with King's books, allowing each of his releases to receive proper attention.
Artistic Freedom: Writing under a pseudonym gave him the creative freedom to experiment with different writing styles, themes, and characters without compromising his main identity. This allowed him to explore a broader range of ideas and literary experimentation.
Testing Reader Response: By publishing books under a pseudonym, Stephen King could gauge reader reaction and feedback without the expectations that came with his widely recognized name. This provided valuable insights into his audience and helped him refine his craft.