He's right that exploitation isn't what distinguishes billionaires from other capitalists. There are many unsuccessful/less successful capitalists who nonethel

He's right that exploitation isn't what distinguishes billionaires from other capitalists. There are many unsuccessful/less successful capitalists who nonetheless still exploit people. But it's impossible to become a billionaire without exploiting people at a grand scale. And by exploitation, I mean something very simple: paying workers less than the value of their labour. Without exploitation there is no incentive for capitalists (within a capitalist system) to hire people. Since capitalists (billionaires and non-billionaires) still hire people, it's clear that exploitation is endemic to the capitalist system, and is required to become a billionaire.