Just as cynics say “Great career move” when a fading musician dies unexpectedly, leading to a massive boost in the sales of their albums, so it takes having The Grim Reaper as your literary agent for some writers to get anywhere.
I’ve mentioned the sad tale of John Kennedy Toole in previous threads, and it would have been fascinating to know what else he would have created. At least he hasn’t been turned into a franchise operation with hired gun authors brought in to continue the series, as happened recently with Stieg Larsson’s Lisbeth Salander and the long-established James Bond and Sherlock Holmes stories.
https://litreactor.com/columns/11-authors-who-became-famous-after-they-died