The following video is part of our "Motley Fool Exclusive Interview" series. In this segment, Fool.com analyst Brendan Byrnes interviews author and Bloomberg reporter Jason Kelly about his recent book The New Tycoons: Inside the Trillion Dollar Private Equity Industry That Owns Everything. 

In this segment, Jason talks about how private equity, despite being a relatively young industry, has managed to grow as rapidly as it has over the past decade or so. Firms like KKR (KKR 3.71%), Carlyle, and Blackstone started out small but have become billion dollar companies in just a few short decades. Jason explains how this happened in the video below.