MapleStory's Future

If any MS version with a semi high user amount is going to fall in the foreseeable future, it will be EMS.

It's definitely not out of the picture for gMS to do so too, though. It's fairly easy to notice that the game is getting to/at the point where there are less people joining than leaving. Given how there seem to be new exploits almost every week causing way too much downtime, it's certainly possible that the game can deteriorate even faster than it is now to the point that warrants closing in the next 5 years. It's inevitable that the game will close, it's really just a matter of when, really.