Harry Potter was a smash hit about a boy discovering he’s a wizard and going to school in a magical world full of wonder and adventure. Twilight didn’t hit quite that high a note, but the story of a teenage girl who learns her classmate is a vampire and falls in love with him did quite well. The Hunger Games popularized the dystopian genre with a bow wielding teenager stepping up to survive death games, have angsty romances, and fight the power.
As far as I can tell, nothing has quite hit that same kind of high since and it may be awhile until the next truly big wave. But if it were up to you, what would the next big thing be about?
Warhammer 40k is inspired by multiple franchises, with Star Wars also being a big inspiration and while it does get compared to it, a LOT of people will encourage you to look past it and it’s massive fandom would give you huge explanations about how it’s not magic yadda yadda yadda. I’d say this argument doesn’t work as well for Star Wars as well as it does for Harry Potter.
And there are plenty of sci-fi concepts and technologies in sci fi media that aren’t explained at all, kind of like the Force which could be likened to magic. But nobody compares that to Star Wars. No one compares The Expanse to Star Wars even if both have elements that break physics completely repeatedly without any explanation(ie protomolecule) and many consider The Expanse antithetical to Star Wars.