Are you really arguing the singular benefit of being human that AI can't take away is a specific concept of law? And then say that running your business with AI is easier than ever? So if we are reduced to running our own business, and AI can do that pretty good, what do we do?
If he is that does seem like a reasonable claim. There is precedent in concepts like citizenship, for example. Property rights. Inheritance. A lot of things give people advantages purely because that is how the legal superstructure works without reference to any inherent imbalance in economic or social power.