(1) Hard drives are dirt f'ing cheap. Buying more than one and putting them at different locations (home and office etc.) is not hard. Storage is still experiencing a Moore's Law type geometric increase in density so this is going to get easier not harder in the future.
(2) Cloud storage is cheap too. S3 is cheap. S3 reduced redundancy is really cheap. Backblaze B2 is stupid cheap. There's no privacy problem here if you encrypt your data on your end. (1) and (2) are not mutually exclusive. They go together nicely. Keep your data local and then back it up encrypted to cheap cloud storage. Many very affordable NAS devices will do this for you.
(3) Enterprise users categorically don't want a system where they don't know who's running their infrastructure. In some cases such a thing would be prohibited by data residency regulations. You will never ever ever convince a CIO to use this. In some cases it might be illegal for them to use this.
(4) The real problem for end users is data handling UX, not actual storage. (1) and (2) are adequate for virtually all users.
(5) The web does have an ephemerality problem but I fail to see how this will solve it.
(6) These systems are mostly too heavy for mobile and don't cope well enough with node ephemerality for laptops. They only work well on desktops and servers and those already have mega-cheap storage and backup options in the form of (1) and (2). Look into how much disk you can cram in a desktop these days for under $500.
(7) The anonymous/uncensorable niche is already filled by Tor, I2P, and Freenet.
This really looks like a solution to a non-existent problem. Am I missing something?
Not trying to hate, just questioning.