Is not it what Ethereum is trying to achieve ?
I believe it doesn't matter as there are so many avenues for Bitcoin that all are welcome. It's like dropping a toothpick over a forest out of an airplane and then parachuting down to find it
What helps some projects helps all of them. What hurts some of them makes the remaining and future projects stronger. Every database in the entire world is fertile ground.
I am in favor of more projects working towards an end goal but my question is why just Archival Storage and not regular storage.
Maidsafe also has a similar project in work with decentralized storage and enough capital to fund the idea from the Mastercoin and Bitcoin public offering.
That said having a redundancy is always a good idea.
I think having the info publicly available (such as public archives) was part of the plan.
Perhaps if you encrypt your stuff and make your "encrypted info" publicly available, then it could be added to the storage system.
Probably part of permacoin 2.0 but they need to start simple.