I didn't say anything about being an introvert or any other personality type. I don't know patio11 or anyone else who commands high consulting fees. But clearly it is more than just knowledge that gets patio11 high fees. There is personality too. If patio11 were a raging asshole then his employability would decrease.

I've met Marines that were assholes so I'm guessing that 'join the Marine Corps' isn't as great advice as it first appears. Recently a Marine drill instructor was implicated in the abuse of Muslim recruits. That isn't a good leadership skill for the corporate environment. Your notion is too simplistic. It doesn't apply to everyone. It applies to some people but not all.

People lie on a spectrum in terms of abilities and personality. Not everyone can be molded to have the requisite knowledge/personality type to command high pay. It's simply not possible. Just take extreme examples and one can easily see this.