alt Hacker News>data into "cages" or "vaults" agents can't access.
This is likely worse as it turns people into the kind of "3 laws safe" thinking. Reality has shown us there is no such thing as an unbreakable cage (well, maybe a black hole is, but you can't get anything back out of it in a useful time frame).
By the time you realize the cage was flawed your data may already be distributed far and wide.
I agree. But isn't it somewhat similar to syncing data with iCloud/OneDrive/GoogleDrive? A convenience service that manages your sensitive data. Just replace sync with cage. It's leakable, but might be also more convenient and cheaper than agents in the cloud.