One of the best known venture capitalists in the world is John Doerr of the firm Kleiner Perkins Caufield & Byers. About 90% of their deals end in liquidation. The 10% that pay off make people gazillionaires, and he is one of the richest men in the world.
Works for him Sucks if you are one of the 90%. But its ok to screw people if it makes you rich.