This is not a meaningful sentence. This is a sentence that tells you that maybe "developed world" is not a good concept to be using.
What is it, 1986?
The idea that different parts of the world live in different worlds is the dumbest and most reactionary conceit, and no one is allowed to use it anymore, sorry.
Makes you wonder: do they even know it's christmas?
DID YOU KNOW: developing world is just a polite way of saying "third world," a concept that survived the death of the three worlds paradigm because we needed a way to say "them, you know, the poors" 
