Graal has always survived on its strong community. A good majority of the content was created by volunteers who were passionate about the game. It is not sustainable though, talented contributors will eventually move on and the game suffers until someone else steps up to fill the gap.
There are good points in this thread on how to revive the game, but they all require a lot of time and resources that I just don’t see happening with the current momentum. I would love to see graal thriving again, but it needs a good team of passionate players or hired help.