If private servers are no longer worth it, then what are we all doing this for? O_o
I do agree that it is hard to start a server but having connections and a lot of friends in the RO world makes that a tad bit easier. First few players of a server usually come from word of mouth. So gather up all your friends, tell them to play and to also invite their friends. Keep your players happy, provide them with something to do and something unique. Hopefully, you'll grow and last.
Good luck if you ever decide to make one.