Agreed that instance admins might not be expected to handle this sort of thing.

Agreed that it is easy to get a copy of the content.

I think we might handle this best as a cumulative platform and community.

Oddly enough, my understanding is that in many jurisdictions it is a matter explicitly asserting these rights. Aside from that, requesting that they be enforced when they are violated.

I feel your frustration. Hang in there though. Perhaps there is a way to combat it.

Agreed. Always a good thought to have when one is considering going down that road. Is the future predictable enough to really expect that particular end?