I'm not exactly sure what point you are trying to make with your reply, but let me try to respond the best I can... Facebook has barely reached cash flow posit

I'm not exactly sure what point you are trying to make with your reply, but let me try to respond the best I can... Facebook has barely reached cash flow positive, and that only means more money is coming in rather than going out [only stating it for argumentative purposes, I know you understand what it means, of course haha]. So until they are [consistently] making enough revenue to cover part of their $700+ million in VC funding, I won't use them as a successful example. Facebook has plenty of potential, but I have my doubts about how much they can grow in terms of revenue. I believe that their user numbers will continue to grow, but I'm not sure that each user is as valuable for them as for Google. Until they change user behavior and intent significantly, I don't foresee Facebook creating a global marketplace on the scale that Google has. In regard to business school, which I am in a form of... I do not believe that we are prepared by attending business school to execute, like you stated. We execute by being acutely aware of the circumstances and understanding the situation, which is attained outside of the classroom by seeing and doing. But overall... I am not quite sure what point you meant to make with that section of your reply. And I agree, picking a business model is in exactly the same realm as deciding what framework/language/database/etc to use. There is definitely NOT a one-size-fits-all business model. The best managers are aware of the options, like you said, but I do not believe that they are necessarily learned in business school. Understanding how Facebook/Twitter got to where they are today, and trying to speculate where they will be in the future is the kind of thing that prepares you to make the right decision in regard to your own business.