I also want to speak to something that I thought of, you asked why the investors would not have just invested in SpaceX directly. Obviously, when SpaceX raises funds they only raise what they need and they control that amount of stock and how it is spread between investors, especially when you are a company like SpaceX where everyone wants in. Also, there will likely be no other opportunities to get stock until they go public as they are actually in a buyback phase. Remember, most often when you invest, your class of shares is better than what you would have if you get shares when the company goes public. This can often come into play and is a very real incentive for an investor to want the stock prior to the IPO.