While Virgos undoubtedly have a way with words, their talent for avoiding worldly success is renown. Write he must, but we'd expect romance novels if other factors in his horoscope were unknown. His natal Moon, representing Stephen's instincts and emotions, makes an easy trine with Pluto conjunct Saturn. Pluto is the planet of death and Saturn can be an author of debasement. These two planets are in Leo, the sign of creativity and play.
Sag is a real cut-up, too.
The Moon also shows where an individual connects most strongly with the public. Stephen King is not one of these creative artists who project their own difficult planetary aspects onto the characters they create. He expresses his creativity by playing with our minds and scares us for recreation and relaxation, much like a very clever but naughty young boy. Since Sagittarius is connected with publishing, he makes lots of money doing it. His extreme success comes from making us scream.