Earlier quoted context omitted.
There's a strong status separation between SF and literary fiction. If you get someone to read SF that has literary merit, they'll try to tell you afterwards that it wasn't SF.
The lack of vehicles for SF delivery have at times impeded literary acceptance and broader adoption -- take H.P. Lovecraft for instance, https://en.wikipedia.org/wiki/H._P._Lovecraft#Literary Format adaptations have catapulted some great SF into the pop culture stardom: The War of the Worlds was published in 1898, and though looked upon favorably, it is rarely mentioned today without also mentioning the 1938 radio br…
Of the five top grossing films, Avatar and Jurassic World are very clearly science fiction, Star Wars and The Avengers are arguably science fiction. It's only Titanic that couldn't be claimed to be science fiction.
The situation is probably similar for TV Series too.
The status problems of science fiction are arguably related to its extreme popularity.