I myself am running a gameserver for Backgammon, 100% my work, my code, my graphics, etc., entirely free, not only free to play for the users but even advertising free, therefore I'm a one man show there as well because I'm not making money with it, therefore cannot pay staff, it's been online for almost 20 years, still in beta, because I just don't have the time to finish it while I already have 100 other ideas for other things I want to get started.