It would likely create a fiasco similar to the Mt. Gox incident. Since their assets are primarily in Bitcoin and other cryptocurrencies, I don't understand what guarantees the security of that money.
The catastrophe this would generate is unimaginable if you think about it. That much Money lost all of a sudden, so many people losing their Money in an instant, it is as if an International Bank collapsed.
It could also generate a lot of hatred and callouts for harsher and stricter Regulations. I, for one would not want my Money to be sitting in such a large Wallet. The risks are simply insane.