You never "own" a domain. You just rent it from a registrar, who had permission from ICANN to let you rent it. There is no "good" that you can take with you when you give a registrar money for a domain.
Edit:- Then the problem comes from registry. So, along with being a registrar, that individual will need to become a registry recognized by ICANN
Ah, cant wait until you understand the nature of money itself ;)