Bottom line, most of us give advice based on what has worked for us.
I agree with this. I think writers have a tendency to think their industry is special and the rules for those '
other, less-aeriodite' businesses don't apply. Business is business. Writers should pay more attention to what other Creatives are doing. King has done a lot of stuff over the years (marketing and distribution and packaging) that may or not have worked based on Big 5 spreadsheets, but might be grand slams for Indies.
For example, his Green Mile serial release gave us an early roadmap. We've learned that readers love series, especially serial series (same for streaming). We know from the music business that the album is rapidly dying off, being replaced by regular releases of singles (driven both by consumer behavior and marketing potential). Put those together and we get this: reject the doorstopper books of old, which is, after all, just a packaging strategy, and replace them with a doorstopper of a
story, but packaged in shorter, regularly released installments. From a craft perspective, these installments need to be written to provide a complete and satisfying reading experience designed for the shorter form, as well as heighten the anticipation between releases - sometimes known as cliffhangers.
The Pickwick Papers put this debate to rest well over a century ago. And folks haven't really changed all that much since then.
The publishing industry came into its own as a modern marketing force in the 80s and I think we all learned some really bad lessons there, the worst of which are couched within the persistent notion of the brooding, pretentious literary persona. And the worst of those are writers who write about...struggling writers...in really really long, incredibly self-indulgent books.
Which brings us back to King. And while I like him, he's still a big part of that outdated literary history we can't seem to let go of.