But they kinda DO demand it. The reasons why box office is down pretty much across the board is because during the pandemic the studios got impatient and even more greedy and decided to all but eliminate the window between theatrical exhibition and streaming. They effectively trained casual movie theater goers to wait for movies to hit streaming and the studios (in order to keep their own internal accounting hidden) doesnt like releasing those streaming numbers.
Aside from a few major releases (Oppenheimer, Barbie, and a variety of movies with children as the target audience like Minecraft) movie box office is down across the board. It's not just superhero movies or remakes or sequels.
And despite the clamoring for original content? People dont support that in strong enough numbers with their dollars. THAT'S why we keep getting a deluge of sequels and remakes, people go to what they know.
And it's not like remakes or adaptions haven't been around since near the beginning of Hollywood. For example, within 10 years between the 30's and the 1940's version there were like three versions of the Maltese Falcon. A bunch of movies that we now consider classics are either adaptions or remakes sometimes of films were originally released (in their country of origin) just a few years prior.