Quote from Yakumo Yukari;1061729:
For comparison's sake, what would you rate WoW or Runescape's potential survival time at?
Both games are giants of mmorpgs. There is no way I can really give a statement on when it will die.
WoW will live an indefinite amount of time. People talk about how its dying, or how new games will kill WoW, but each expansion manages to bring WoW's subscriber counts back up to 10+ million.
Blizzard will actually accurately decide when WoW has reached its peak, and release their next mmorpg before it truly declines.
I've never played Runescape or know much about it. So I don't know what to say here. I know you're trying to compare them to other long lived games. I would say the difference between mmo giants like maplestory and niche games like mabinogi are just sheer numbers. Mabinogi has everything it needs, but NA's numbers are abysmal compared to KR's population.
If NA Nexon sees greater opportunity costs in another source, they'll hop to it. That is why I predicted 3 years. The next wave of mmorpg's are coming around then.
In arguing against my own points, there are games like Ragnarok, which has lost most of its original players but still maintains service. But Ragnarok is a very low/cheap maintenance game. It practically runs itself. I don't think Mabinogi can do the same.