2-3 years. Because it will be 2012 then...
but seriously, imho although they won't die out so suddenly within the next year or two. They are probably the longest, still-running MMORPG operator out there so i reckon they know how to manage their funds and how to recoup investments for the long run etc.
however, after RO they never seem to have been able to produce something that is spectacularly out of the norm. Thus imho they will loose out in the end. At the very least their "death" imho is an acquisition by another body or a major transformation/merger...
-w-