So I've been working on the history of income and wealth distribution for the past 15 years, and one of the interesting lessons coming from this historical evidence is indeed that, in the long run, there is a tendency for  the rate of return of capital to exceed the economy's growth rate, and this tends to lead to  high concentration of wealth.
Proučavam povijest dohotka i raspodjele bogatstva  zadnjih 15 godina, i jedna od zanimljivih lekcija koja proizlazi iz povijesnih dokaza uistinu je ta da,  na duge staze, postoji težnja da  stopa povrata kapitala nadmašuje stopu  rasta gospodarstva, što dovodi do visoke  koncentracije bogatstva.