There was a startup called Space Monkey that sold NAS drives where you got a portion of the space and the rest was used for copies of other people’s content (encrypted). The idea was you could lose your device, plug in a new one and restore from the cloud. They ended up folding before any of their resilience claims could be tested (at least by me).

Would be people be willing to buy an IA box that hosted a shard of random content along with the things they wanted themselves?