[berkes]

Those are but some of the problems that IPFS, Dat (or Storj and probably Skynet too) do, or will face.

That doesn't make "rolling your own" any more reliable, performant, etc. So the question becomes even more apt: why will "building your own decentralised storage as requirement of a much larger project" work. If even the focused, dedicated "decentralised storage projects" cannot solve some problems?