That is because they are gurus at selling books, and making public appearances. Their sales skills are better than their trading skills.
Introvert, but like to 'party' and engage in interesting 'things'. This was a big struggle in childhood/early twenties.
I accidentally made that sound a lot more interesting - pun intended - than intended. I just meant a higher than average interest in innovation and entrepreneurship. I think a significant portion of the forum visitors here share that as well, I reckon. Sometimes, introverted people are mistakenly portrayed as somewhat boring. But in my opinion, there is no correlation between introversion or extraversion and interest in this.