Comment by rplnt

WhatsApp (and similar) will never make any of the invested money back though. Its value is purely in chance that it will grow and someone else will buy you out in a few months or years. Its only valuable asset are users, and they will be gone. So someone at the end of long chain on of rich people will weep.

With SpaceX, there is enormous value in the company as it is, even if it went bankrupt tomorrow.