I buy your arguments. However, I am curious (primarily as a thought experiment): what would happen if Filecoin was able to solve (3) - (8)? By opening up the barriers to entry and creating a perfectly competitive marketplace, economics says that the price of storage would then equal the marginal cost of providing that storage (i.e., electricity, networking, and amortized hardware cost). Presumably that's lower than what Amazon and others charge.

Would love to see a theoretical analysis of Filecoin's impact on the storage market, presuming that it can build the foundations for competing in that market.