Guns, Germs and Steel, Geographically Blessed

I do agree with Jared Diamond, the author of "Guns, Germs and Steel", on his argument on people who are geographically blessed. The world was once only a land of green and water; there was no correct way to civilization. Within time regions of the world, large pieces of land become more populated. It was familiar and people grew inward, instead of expanding and exploring different territorial areas. People are accepting of the known and familiar, and once thought to be content and flourishing, why question that and change? For example if you look at the world currently neighborhoods, cities, and countries that are flourishing remain to do well, they maintain that order. If they were to assist neighboring neighbors, but at the cost there inherent surroundings may change, they will not be receiving any compensation. Due to self-interest, the thought of being more unfortunate and inhibiting less, with in the factor of extending a hand of furtherance is not likely and far from a priority.