Anecdotally, a lot of hardcore fans who saw the first one multiple times and trailed off doing the same for the second.
I'm not arguing for no presence in theme parks, but I question the true size of it's audience and how successful it's actually been- breaking even and huge profits are not the same even if it's in the black. I'm not convinced they need to build on the scale of Potter to shift the same merch. I also don't really want to hang on every word screamscape prints either, no one else is saying that so far.