I think the main issue with non-fiction is that it doesn't tend to have the dynamic drive of fiction. A non-fiction book will have many disconnected items, each of which provides a natural stopping point at the end, and it's another act of will to start the next section from there. It's similar with short story collections, and with some novels.
A good page-turner will have no good place to stop. Nowhere you need another push to carry on. The big popular favourites tend to be this kind of book. Agatha Christie for crime, Bernard Cornwell for historical fiction, JK Rowling for children's fiction, Lois McMaster Bujold for SF, etc. They aren't necessarily the best written or deepest books in their fields, but they all tend to have that suspense and drive that means you never have to stop reading until you run out of pages.
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