Sorry, I'm not mocking the possibility that Gold might be a future Olympic champion.
But if she does snag Olympic gold, I do not think that her success will cause a dramatic increase in figure skating's popularity [ETA: in the U.S.]. At best, maybe a small and temporary boost, IMHO. (And I'm American.)
By the way, does your prediction apply only to Gold? What if an American lady other than Gold wins the 2018 Olympics?
Way less than Kim, no doubt.
And would you guess that the earning power of an American lady who wins the Olympic skating gold would be approx. in the same range?