See, both countries lie on Equator.
Indonesia has over-1000 year old dramatic temples still standing today and testifying to their cultural and spiritual development. Multiple religions, cultures, kingdoms left their lasting imprint and create very rich background for whatever is happening in Indonesia now. Its impossible to move around and not bump into these artifacts of old past.
Kenya, which claims to be the cradle of mankind, has not produced any culture, no literature, no history. Nothing. Its not even a black hole which swallowed some of Kenya's past. There has not been anything. It's Tabula Rasa.
This is actually interesting. Two countries with practically the same environment produce such dramatically different results over last millennium. Why?