Allan Meltzer’s article raises a lot of interesting issues. The main argument is that top one percent has increased its share of national income pretty much everywhere, and this underscores that the causes of this trend should be sought in global trends. It is true that there have been important global trends — in particular, skill-biased technological change and growing international trade — increasing the demand for skills. See for example Claudia Goldin and Larry Katz’s magnum opus on this, or this discussion of their book, or this article on technology and inequality. None of this is (very) controversial.