I played a game a long time ago Called Wurm Online. The Mojang Minecraft creators made it. To prevent player greed and stop them from claiming all the map to a clan, tribe, group or individual, we had to pay for a "Deed". It was too expensive to grab too much land and that way we all had room to build bases. Sure, first come fist serve is fair, but pillaring a whole map for free is just wrong...