This isn't a prediction. It is an observation that a particular stockpile of already-existing and extracted helium of finite, concrete, and precisely known size has been mandated to be sold by 2015, after which there won't be any of this stockpile remaining. It may happen to involve a natural resource but is not the usual sort of "natural resource will run out" prediction at all.

Theoretically, one could make a lot of money stockpiling the stuff now and selling it later. However I doubt I'm the first to notice that. If enough people do that it would at least buffer the shock.