As I understand it, they set up the Sussex Foundation modeled after the Clinton Foundation. Through this they will be financially independent (whatever that means because given their net worth, I know I would be financially independent already). They have copyrighted SussexRoyal brand everything they could think of. So they intend to make being ‘royal’ just another merchandising scheme while they jet around telling us all how to live and what to think.
And, if you object, it's just because you're an evil racist. It's perfect.