The Happy Death Day movies have their fans, and the movies well regarded by critics, which is the sort of recipe that leads to other people who maybe missed them the first time around discovering them as time goes on.
We’ve seen more than our share “long delayed” sequels in recent years, and so the idea that down the road people might be ready for another Happy Death Day movie could end up being true.
It’s not an entirely crazy idea.
As more people check them out, more fans are created and more people want to see the trilogy resolved leading to interest in making the movie because the audience, at least in theory, is now much larger.