Arma was not really growing at all. Sure we had a private server, but within eGO we had over 50 people that played the game, or so the poll said. Sadly we only saw around 5 or less people at the events.....soooo it got canned. The game is still being updated with new stuff, so we can always go back to it later, kind of like when we entered Arma 2.
So there is hope!