I don't think the house analogy works. You don't keep other peoples stuff at your house. If you ran a storage warehouse, I'm pretty sure your customers would expect you to have adequate security. If a customer came in through the back door of my warehouse, and told me the lock doesn't work, I wouldn't punish him. I would fix the lock.
If it is well known that the studios use various accounting methods to hide profits, why do the people in the industry still accept contracts based on profits?