Still not true though.That’s what they do. All these crappy sequels and remakes never get the audience that originally attended. Many of these outright flop. So yes, I blame laziness and creative bankruptcy.
The superhero genre at cinemas would have died ages ago if people didn't watch them.
And generally reboots, sequels etc are safer bets. Of course there are examples where it completely fails, but there's a reason Apple for instance suddenly will not change the name of the iPhone.

Want To Produce A Profitable Movie? Make A Sequel
Studios hate risk. That's why they love reboots.

Quite a lot of articles go into this. This is also why Disney bought Star Wars from Lucas, rather than creating an IP of its own.