I can see how this may be a problem for invite-only systems, but a place where anyone can create an account? Plz... In a scenario like GitHub's organization (w

I can see how this may be a problem for invite-only systems, but a place where anyone can create an account? Plz... In a scenario like GitHub's organization (where one user has privileges over many shared resources), for example, its owner still carries the responsibility of safety of all its resources. If it's possible to escalate privileges, then that's the place that needs fixing.