Geez, I know this is Slashdot, but really. The guy did have a second copy, but it died - as copies do - at the worst possible instant. In this case, basically as the Mega servers were being seized. Should he have had a 3rd copy? A 4th? Sure, but that's not the point.
The point is: the US government seized servers containing data from thousands and thousands of users. The US government has made no provisions at all for people to retrieve their property. This is theft, plain and simple.
Consider this in meatspace: The government raids a restaurant thought to be violating health regulations. They seize all property in the restaurant: not only stuff belonging to the business, but the wallets, purses and bags belonging to the customers. The restaurant is in limbo - that's bad enough - but why should the customers' private property be seized and never released.
Of course, this is the same country that allows asset forfeiture. I'm sure your wallet is guilty of some crime or other...