I think Drobo suffered from the problem of being slightly too technical for the technology dumb, and slightly too dumbed down for anybody who knows what Network Attached Storage is. Once you have the knowledge to know that you want network attached storage with redundant hardware, a generic RAID solution is within your ability level and there’s no point paying a giant premium for the Drobo branded version.

There's a corp solution called "CyberArk" that's intended for storing passwords and other secrets and providing an audit trail for every access, as well as access controls, etc. It's nothing like a solution for personal data storage, but those core concepts would be great.

1. Your stored data is under access control.
2. Configuration of access to this data (write, read, and access frequency) is controlled by you.
3. Access grants to others are time limited (although, maximum time may be 10 years or more.)
4. Every data access is configured to be logged by default.
5. Access to important data can be configured to require real-time authorization by the owner.
6. Full change history is logged by default and thereby all changes can be reversed.
7. Only the owner can choose to delete change history.
8. Only the owner can choose to delete logs.

The trick is getting Meta, Alphabet, X, banks, retailers, libraries and the rest to agree to use this API for storage of your data. The next (impossible) trick is enforcing their secure deletion of copies of your data in a timely fashion after they have accessed it.