Comment by RevEng

I store my belongings with a storage company. They rent facilities from a property owner. The storage company goes under while my stuff is still in the storage unit. I go to the property owner and say my stuff was in there. They say, no, that's owned by the storage company. Incorrect - the belongings were owned by me the entire time, the storage company was just holding it for me. I need to prove it was mine, but I don't lose property rights just because it's in someone else's possession.

Likewise if I store data with a cloud provider. Sure, Iron Mountain shouldn't just offer it up without proof, but if I give them notice of a legal case they should be sure to hold on to it, and if I win the case they need to hand it over to me. All I need to do is provide proof that I am the rightful owner of those goods.