So-cial-ism - “a way of organizing a society in which major industries are owned and controlled by the government rather than by individual people and companies “
So now that we have that covered, I bet you're wondering what does socialism have to do with Thempark MMOs? Well, I am glad you're wondering! If you have read the definition of socialism you'll realize that the economy from themepark MMOs very much resemble a socialist economy. Why? Because there is very little to no free market trade among players. Most of the gear, vanity items, and quality of life improvements (mounts, housing, travel, weapons, armor) are provided by the game.
In themepark MMOs a player can purchase or gain anything from the game without having the need to visit the market, auction house, or simply another player. I mean if a player was interested in acquiring gear he can simply do so by quests, reputation vendors, farming drops, or farming raids and dungeons. Ultimately, there is no real need to purchase items from another player because the game is primarily the players sole provider.
Marx-ism - “The political, economic, and social theories of Karl Marx including the belief that the struggle between social classes is a major force in history and that there should eventually be a society in which there are no classes”
The Marxist theory is applied with the socialism theory but is also applied when a MMO nerfs its content. When the content has turned from the players who put in the time and effort to achieve the best gear or content available to where all players now have access to the content and gear (welfare epics) available to them. In short, the purpose of this is to reduce the skill and class gap between casual and elites. Yes, in many of today's casual MMOs such as World of Warcraft, just about everyone at max level is wearing epics. Sure there's a difference in epics such as heroic raid or top rating arena epics that are only achieved by completing top teir content, but even then the difference between the top tier and normal tier isn't enormous and not to mention both classes, the elites and casual end up completing the content.
So are Themepark MMOs based on socialist principles? You bet. Game provides gear? check. Game provides transportation, housing, food, and health kits? Check, check, check, and check. All of which describes, like a government that is based on socialism, a themepark mmo system is also a socialist and Marxist government.