you power through it, you get invested - but you know that nothing will ever come out of it and in no way can you recommend it
maybe it's true - but it doesn't happen
I'm thinking things like Da Vinci Code, 50 shades, Twilight, neither of which (the books) are particularly good or tasteful or whatever, but they were very popular, appealing to people who normally don't read books.
I dropped of a book to this guy that I had just finished called "The Hotel on the Roof of the World," and he later told me that they optioned the author. Unfortunately the film never got made, but if you read it you'll see it has the bones of a really nice film.
It didn't last forever. The last time I saw him was one of those wild random coincidences. I was visiting Cannes during the festival (as a tourist) and ran into him on the Croisette. We went for coffee and he told me that he had become a television producer.