We are so far past that in mass market fiction. It's folding back in on itself.

Tom Clancy has new books coming out every year and he's been dead for over a decade. They don't hide the "ghostwriter" but they also put Tom Clancy in huge letters at the top even though he had less than nothing to do with it.

https://www.amazon.com/Clancy-Line-Demarcation-Jack-Novel-eb...