The author of this article seems to be confusing "changing the world" with helping people. UNICEF and similar organizations are great at helping people, but they really aren't meant to change the world. They just make the existing one a little less terrible for those who are worst off. I can't imagine a compelling argument saying that digging wells or tree planting has changed the world more that Facebook or Google over the last 15 years. Whether those changes have been for the best is open to discussion, but the fact that many startups have in fact changed the world in significant ways is hard to dispute.