Bill Gates is an American businessman. His values, identity, source of income, and entire way of life is derived from a particular culture - American, Western, market-based culture. A culture which, depending on your viewpoint, has certain good qualities and certain bad qualities.
The point I am attempting to make is: Bill Gates is in a position of power - defining power as the ability to harness forces. When the Gates Foundation, or any other powerful entity, gets involved with a particular less-powerful culture, it unquestionably affects the social structure and culture of that society. In the case of the Gates Foundation, it inevitably it becomes more of an American, westernized one. It is easy to see this from the shared link; it is written from an American worldview and frames everything in American terms.
I am simply asking if replicating American (broadly, Western) cultural values is necessarily the correct solution to solve poverty and other problems around the world.
Personally, I would rather see the diverse cultures of the world manage to develop technologically and socially in their own unique ways, rather than simply adopt Western social structures.