There is this
"A recent study coauthored by Aguinis found that among more than 633,000 subjects in four domains, elite performance followed a power-law (or 80/20) distribution, with the performers on the tail dominating in terms of output. By contrast, in a normal "bell-curve," distribution would describe a "majority rule" in which those of average ability are the most generative in aggregate, as they are the vast majority of the population.
Norman Augustine, former chairman and CEO of Lockheed Martin, underscores the power-law distribution in stating that the top 1 percent produce nearly 20 times the per capita output of the bottom half in many measurable undertakings. At the level of nations, Heiner Rindermann and James Thompson examined cognitive ability data sets from over 90 countries to show that average IQ is essentially the decisive factor in human capital and that it is really the top 5 percent—or the normal smart—of a country's population that has the biggest impact on that nation's wealth."