Is there any precedent for someone being paid out successfully worldwide?
No, at least to my knowledge, but maybe it is their own fault? Think about it, why those companies avoid purchasing insurance from the mistakes of their employees? Such insurance plans do exist, most of the licensed taxation advisors have them here where I live.
Luckily it's not mandatory by law to have such plans so thanks to the lack of such law those can be quite affordable.
Would it financially ruin the crypto-exchange to buy it? I think not, it is a service and as such its terms can be negotiated, so as the price.
Maybe its time to start demanding just that from the platforms? Of course demanding as a customer not as a state lawmakers.