>>150212288 (OP)
This is going to make you feel either very young or very old, but 381 million worldwide for an animated movie in 2005-2015 was actually pretty disappointing, especially from a major tentpole from one of the Big 3 of Dreamworks, Disney and Blue Sky(Once upon a time...)
Just to give an example, this same year had Up crush the box office with 736 million, and Ice Age absolutely destroyed the place with 880 million dollars. This would be the same year Avatar came out, after all, there was money to be had and MvA just didn't really do much at the box office, same as Megamind would do. It just wasn't enough of a critical darling to go for round 2 and wasn't financially successful at the box office or merch to justify putting something else that might work on the backburner in its place. Simple as.