This thread inspired by @ericthefourth blatantly not having watched more than about twenty minutes of Game of Thrones.
For TV, I try to give stuff two full episodes before writing it off, because pilots are unreliable.
Books, I’ll probably finish it if I’ve started it tbh, then give it a one star rating on Goodreads because I’m savage af.
Computer games, probably half an hour, if that. Plenty more where that came from (a Humble Bundle from two years ago, probably).