Object storage in the cloud is likely to succeed there, but then cost and security issues arise. If data are encrypted, then managing keys is another pain/cost

Object storage in the cloud is likely to succeed there, but then cost and security issues arise. If data are encrypted, then managing keys is another pain/cost dimension. At the several decade point, keeping copies at multiple vendors becomes a discussion point, since even Google and Amazon are not likely to be immortal, and that Ukrainian data center might experience physical security challenges.