There are lessons to be learned in that. For example, for that population, bandwidth efficiency and information leakage control invite solutions that are suboptimal for an organization that would build market share on licensing deals and growth maximization.
Without an overriding commercial growth directive you also align development incentives differently.
Users upload their encrypted data to miners, along with a negotiated fee for a duration of storage, say 90d. They take specific hashes of the complete data, and some randomized sub hashes, of internal chunks. Periodically an agent requests these chunks, hashes and rewards a fraction of the payment of the hash is correct.
That's a basic sketch, more details would have to be settled. But "miners" would be free to delete data if payment was no longer available on a chain. Or additionally, they could be paid by downloaders instead of uploaders for hoarding more obscure chunks that aren't widely available.
Not everyone who watches hentai is a perv