Quite the contrary. They didn't green light part 2 until they saw the numbers for part 1, and they were excellent.
That doesn't mean they'll go all the way to God Emperor, but I don't think we know for sure they won't.
That doesn't mean they'll go all the way to God Emperor, but I don't think we know for sure they won't.
I also doubt they'll go for 3 because all following books don't have that kind of action flick / visual extravaganza potential and this is what Villeneuve can do. Instead there is a lot of talk and this is what Villeneuve can't do. It'll still be the same ol' Dune with a lot of chamber play. I doubt he's even seriously interested in that.
Children takes a sharp turn with the whole possession thing and then Leto's metamorphosis. But Messiah is quite adaptable and is the real ending for many of the same characters as Book 1.