Marc Andreessen on why the founder model keeps winning: "You're much more likely to build something important in the 21st century if you start with a founder and train them on management, than you are to start with the manager and try to train them on being a founder." "All the old incumbent institutions in the last hundred years that are run by managers... they're all collapsing in trust and credibility because they can't adapt." "When Mark [Zuckerberg] started Facebook, he had never had a…