Servers come and go it happens to every game. Newer games come out and show promise so people flock to them. Look at WoW its not what it used to be and could be considered "dying". It is just how it goes. Games also shut down due to lack of income, don't be dumb and think they don't need money to keep servers running and ❤ ❤ ❤ ❤ so course they need to charge / make profit to keep the game going.
You have ways to get moonstone while it might not be ideal. PVP, don't like it? Save up when you do weeklies/dailies and if you do a ton of characters which honestly I run 9 a day through dailies it doesn't take long (nothing says you have to do all of the dailies / hardest ones). Make gold buy what you need is a liable option as well. Not making enough gold? Farm dungeons on more then 1 character a day. I can do just from dungeons and dailies a easy 900 gold a day + money I make from crafting and on the off shoot I get pulled into doing a raid with clan / friends even more. All with me being free to play.
Again, if your not willing to invest time, you need to invest money into progress anywhere in games. Oh and let me mention one last thing, I get all of my dailies on my characters done within 2 hours or logging on leaving more time to go back through and help clan members throughout the day and do other dungeons for even more money.