Trust me.
This is pretty typical for Hollywood. Studios never ‘make’ money on any film. They charge off for “studio overhead” at $500,000 per day; etc. By their accounting, they always lose money.
And if you want to sue them, you’ve got to hire your own accountants to do an audit of the entire studio books (at $500 a day?) to work forever and ever; plus pay attorneys, etc.
And even then you might lose.
(Morale to the story: get all your money up front; or a percentage based on the GROSS receipts, not the NET; and get it paid AT ONCE, like YESTERDAY, not later.)