The House of Mouse had an agreement to make 7 films from the 7 books in the Chronicles of Narnia series. They made . . .
the 1st. The Lion, the Witch, and the Wardrobe.
the 2nd. Prince Caspian.
And then they took a look at the future box office for the series and saw declining expectations. So, they used what ever escape clause was in the contract and got out of making any more films. Which is almost an unprecedented action in Hollywood.
Yeah, I remember when they were first coming out people starting making this huge deal about them. Then they cam out and ... they weren't hated or anything, they were just... there.