You can’t? Look at Disney World or Universal Studios. Sure they have rides, but a lot of it is the experiences involving people’s favorite movies/shows.
I can definitely see people interested if they get that part right.
Imagine getting a drink in a tavern from The Witcher. Or a fancy dinner in a palace setting from The Crown or the mansion from Umbrella Academy. Imagine going through a haunted house based around Hill House. Running an obstacle course from Squid Game. Themed escape rooms or live action shows based off Stranger Things or Black Mirror.
That’s not even getting into merchandising. Sure, people are probably not going to flock to buy a Queen’s Gambit chess set. But Castlevania or Arcane collectibles? Dragon Prince plushies? Literally anything from Netflix’s sizable anime collection?
There’s a lot of ways they could do it wrong. In fact it’s more likely they get it wrong than right. But I’m not going to dismiss the idea right out the gate, I do see the possibilities.