Not so much a criticism, more a 'look further, keep digging, and ye shall find more'. And since the topic in question is perhaps the most defining one of our day and age, it seems worth it to me to try and explain.
The article in question is Charles Hugh Smith's Why Nations (and organizations) Fail: Self-Serving Elites, and the book he references is Why Nations Fail: The Origins of Power, Prosperity, and Poverty by Daron Acemoglu and James Robinson.
Charles starts off by saying:
The book neatly summarizes why nations fail in a few lines:
(A nation) is poor precisely because it has been ruled by a narrow elite that has organized society for their own benefit at the expense of the vast mass of people. Political power has been narrowly concentrated, and has been used to create great wealth for those who possess it.
The Amazon blurb for the book states that the writers "conclusively show that it is man-made political and economic institutions that underlie economic success (or lack of it)", and continues with examples used such as ancient Rome, North Korea, Zimbabwe, the Congo, to make the point that some countries get rich and others don't, because of differences in leadership structures. That in itself certainly seems true, but that doesn't necessarily make it the whole story.