Universal does own the rights to Madagascar, along with all the other DreamWorks films.
No.... The only movie they distributed was Shrek. Every other DreamWorks film was distributed by Paramount. They don't own the rights, but own the right to use through DreamWorks. However, since DreamWorks and Disney teamed up, I doubt you'll see anything else from them.
Me or my 4 year old daughter really didn't care for the movie, nor did I think this movie was popular enough to base a theme park attraction off of.
Not liking the movie is one thing, everyone is entitled to that opinion, but to say it "wasn't popular enough" is crazy. It was one of the top films of 2010, and everyone was obsessed with Minions and Agnes (It's so Fluffy) during it's release.