Short anwser: No, its popular.
Long anwser: All games will eventually close, whether because their not popular anymore, lost quality or the company that hosted them went bankrupt. Heck, when you think about it nutaku has only existed for 3 years and how many games that they hosted have dissipated?
Its amazing how easy it is for a consumer to give up their capital for temporary objects as long as in the "moment" they have it, but most people care about the now, why would they care about tomorrow?