Who owns the Maori Haka

This article brings up the interesting topic of royalties, paying a fee for each time the Maori Haka,  Ka Mate is performed by the New Zealand All Blacks rugby team.  The Haka was a sacred wa dance performed by the Maori since ancient times.   This topic stems from many others such as when is cultural and national pride a commodity or commercial product.  Who if any single entity owns specific pieces of cultural heritage and should htey be paid for rights and usage.  Also will commercialism of cultural heritages have a positive or negative effect for native cultures.