Stephen King made a remark about the “one hit wonders” of the literary world, i.e., Harper Lee, JD Salinger, etc. “What did they do with all the time they had on their hands? Were they continuing to write and forget about publishing?” Of course King writes every day without fail, and it’s not difficult for him to find a publisher now at all.
Salinger published a lot of short fiction in the ‘40s and ‘50s.
Stephen King also writes mostly trash. He is to literature what velvet Elvises are to painting.