It could be argued in a court of law that Alizee helped Blizzard Entertainment become financially successful even more than they already were soley because of that night elf dance
That night elf dance helped launch World of Warcraft, that dance was there at launch. Therefore Team Alizee could be entitled to the profits of World of Warcraft since the first day of launch
Sure the dance is not copyrighted but it can be argued in a court of law that the popularity of World of Warcraft is due to the night elf dance performed by Alizee before the game went LIVE