In addition to your password, you have a recoveryKey that can be shared with your family members. As long as you've access to either your password or your recoveryKey, you will be able to decrypt your data.
A shared recoveryKey can be revoked and a new one generated if necessary. (We don't have a hook for this on the UI yet, but our system is designed to support a key rotation).
Nice! I appreciate that this is something that you've looked into. I'm still wary of the core tech here, because it's just too powerful. I'm personally ok with my photos being discovered by family many generations into the future. Or by random archivists. So much of the history we have access to is the result of discoveries of people's miscellany. Moving into an age where people's photos/messages/letters will auto-self-destruct by default -- the opposite of their physical counter-parts -- is scary to me.
The risk you're talking about applies to all cloud storage providers that depend on monthly/annual subscription renewals I suppose. Which makes me wonder if there is a market for a 100 year plan with pro-rated refunds. :)
A shared recoveryKey can be revoked and a new one generated if necessary. (We don't have a hook for this on the UI yet, but our system is designed to support a key rotation).