You've no doubt noticed that the biggest movies every year are sequels or prequels or remakes. You can decry the lack of imagination and new stories all you want, but you can't argue with the fact that these movies make money. They came to a built-in audience of fans, and you don't have to explain a lot to promote them. But that's not all that's at play.
In 1971, we had Willie Wonka and the Chocolate Factory. It was a charming movie, even though it was essentially a candy ad. In 2005, we got a remake, Charlie and the Chocolate Factory, because Tim Burton thought he could do it differently, darker, and better. While not quite as charming as its predecessor, it was more faithful to the book. And now we are getting Wonka, a prequel that's also a musical. Nerdstalgic is of the opinion that redoing the same story over and over is worth it when it's done well enough, but remakes often come with a bad reputation because so many of them aren't good at all.