They stand as the arbiter of who will gain money and who will lose. There basically is a series of cases 'erroring parties vs Goldman' and 'erroring Goldman vs

They stand as the arbiter of who will gain money and who will lose. There basically is a series of cases 'erroring parties vs Goldman' and 'erroring Goldman vs other parties' and whether Goldman will lose money is decided by an Exchange (hint: they rule in Goldman favor every time, making an analogy with forced arbitration even more proper)