The person who starts a company may not be the best person to lead it when it's worth billions. I admire people like Craig Newmark of Craigslist for stepping ou

The person who starts a company may not be the best person to lead it when it's worth billions. I admire people like Craig Newmark of Craigslist for stepping out of the way, and people like Mark Zuckerberg of Facebook for continuing to lead.