There was an interesting article that I read a couple of years ago. I don’t recall where it appeared, but it concerned college literature professors lamenting the number of students who wrote down “Stephen King” as one of their faviorite authors. They apparently found this intolerable.
King, of course, is mainly horror fiction and fantasy fiction, with a few non-genre pieces. But even liking Rita Hayworth and The Shawshank Redemption would not have saved you from being reviled by these professors. And what really irks me was not that the students were putting forward King as an example of Great Literature, but merely stating that they listed him among their favorite writers. That’s true, even if he doesn’t meet one’s definition of a deep or worthy writer.
It’s not clear to me what separates Great Literature from Popular Writing. I’m re-reading “Huckleberry Finn” by Mark Twain right now. Twain was an unapologetically popular writer. Damned near everything he does in this book runs against what one ought to do to be considered Great Literature. He writes extended pieces in dialect (a handful of dufferent types). He constantly breaks the fourth wall and talks to the reader (he even knows that a book has been written with him as a character). It’s fuilled with self-conscious humor. Twain actually snatches a happy ending from the de rigeur unhappy ending. The book was condemned by literary figures like Louisa May Alcott and condemned by the Concord Public Library. Yet it was immensely popular, and it sold and sold. Now a lot of people consider it “The Great American Novel”, despite all of that.
I could make similar arguments about Poe and Dickens and Victor Hugo. A lot of stories that were held up as examples of great literature by my professors are by people I never heard from again.
A few of the works of Jules Verne and H.G. Wells were considered “Classic” enough that you’d find them under “Literature” rather than “Science Fiction”, but only a few, and the earliest ones, at that. By the time he died, Verne’s new books were no longer being translated into English (Some of them have only appeared in English for the first time within the past ten years). Try to find Wells’ “Star Begotten” in Classics. Or anywhere, today.
A select few SF and Fantasy writers have graduated towards literary status. Bradbury made in by the early 1950s, without renouncing his pulp roots. Recently Lovecraft and Philip K. Dick have had hardcover critical editions.