That is just the way that the entertainment industry works. ("Biz" is an informal shortening of "business.") Usually used to explain something negative about the industry. After nearly a year of work, a key investor pulled out and the whole film collapsed. Ah well, that's show biz. You've just got to learn how to play the game and do things the way producers and executives want. It's not always fair, but that's show biz for you.