I am not an expert, but people ask me to talk about Facebook's business. Here is a silly answer. Say Facebook has 1B users and each is able and inclined to buy a single share of Facebook for USD 40, a onetime transaction, no annual fees. That is 40B dollars that Facebook can invest, and using what private hedge funds "guarantee" --- 3% of free spending money after maintaining capital, adjusted for inflation --- have 1.2B dollars of spending money per year, for perpetuity! You can maintain a decent Engineering and Infrastructure operation for that budget. Make those shares non-voting.