> If Soros's bet had gone against him, he would have lost all of his investors' money and been left penniless. There would have been no bailout waiting in the wings.
Well, no. This is explained in the article: If Soros' assumption (that the exchange rate would plummet) hadn't been realised Sterling would've stayed at the lower bound of the ERM and Quantum wouldn't have lost much at all.
We can have reasonable confidence in that assessment in hindsight. At the time, I would have been unwilling to gamble my net worth against the possibility of some unforeseen event causing a spike in the value of the pound. It was a non-zero risk.
Well, no. This is explained in the article: If Soros' assumption (that the exchange rate would plummet) hadn't been realised Sterling would've stayed at the lower bound of the ERM and Quantum wouldn't have lost much at all.