It was not until the communism of China was mitigated that their economy began to take off.
I understand that the same thing happened with India and their socialist policies, but I am not as versed in India's history.
There are heavy negative effects that come into play when large-scale growth happens. The Industrial Revolution is the history of the West's large-scale growth. It's taking place in China now too.
Let us not delude ourselves that sunshine, rainbows, unicorns and world peace will suddenly come about. Futurama provides a humorous glimpse into that sort of future.
People are always self-interested and selfish, in the governmental scale. While we might not like that... we always prefer better things to happen to us and our little domains.