Books are getting longer.
I wonder how much of that is down to ebooks, which weigh the same and cost the same to produce regardless of length?
I know that as I gain more experience as a writer and take on more challenging stories, it takes me longer to tell them, but there’s also the phenomenon referred to in the article: highly successful authors don’t get edited down, even when they should. Partly because their fans will keep buying the books even if they’re bloated and overwritten.
(I am not a highly successful author, for the avoidance of doubt.)