I worked on an mmo, but it never came through because most people don't like to play those games in this region. They are more interested in brand names and sports, things which they know, and things which companies can rely on to make money. If you make some mmo that no one has heard of, chances are people wont care about it because they are looking for all the things which are identifiable to them, and companies see it as too big of a risk to produce if there will be little profit.
it's really lame work, and sucked dry of creativity.