Exactly, built-in delegation and impersation features solve this. AWS IAM and Kubernetes have great implementations. Hopefully we get some more standards like OAuth so people talk about this stuff more.

On the consumer side there's also the various "Family Sharing" systems that are only now in their youth. I think that's a "digital asset rights" fight waiting in the wings that some sort of "family sharing" should probably be guaranteed (by laws, probably), including to answer questions of proper transferal of "ownership" (right now "family sharing" in most cases isn't something that you can gift in a will/estate; most digital asset accounts aren't considered survivable after the death of their original user).

There are so many interesting legal questions about digital assets that we're all afraid to ask, but probably should be solving today (if not yesterday).