Basically, you can't do much that is interesting unless a computer system ultimately resolves, or is imputed by law to resolve, to a specific natural person.
(EDIT: People are missing the point. What you call it is immaterial. All the handwaving aside, these "autonomous systems" including the ones described by the author are legally not autonomous. It is not possible under the law to construct such a thing. You may claim that it is "autonomous" but no government will recognize that claim as suggesting legal independence from a natural person. True AI would make this weird but we do not have AI today and the underlying fact still remains.)