It’s because we’re in the modern era of the mega franchise where they stay relevant far past their prime. Everybody wants to be like Marvel in the 2010’s, so now any series that’s had a history of great popularity is getting reboots, remakes, tv spin-offs, etc.

Harry Potter’s growth is largely attributed to the media urge to get their own mega franchise after seeing just how popular Pokémon had become worldwide, as well as Scholastic losing their golden goose of Goosebumps because of legal issues with R.L. Stine.

There were attempts to do to Harry Potter what they’ve been doing with other franchises but only mixed results have come. The Fantastic Beasts series failed, the broadway spin-off play failed, and the tv show looks like it won’t be received well.

Only the movies and the Universal theme park have had success. Hogwarts Legacy was very popular but it didn’t last much longer after its release date.

Something that’s left out is Harry Potter still being very popular in the global south. A lot of young kids read it when they start to learn English and if anything it’s made a bit of a comeback, at least from what I’ve seen in my area.

On the other hand, I’m pretty happy that Percy Jackson seems to be doing well again despite the original movies being God awful. People told me they were “fad books” but I got more out of them than I did with Harry Potter.