Perhaps, in a virtual world where no material matter will cause greed and corruption. 
Makes sense, though greed will never be ceased wherever in the world even if that is virtual world. It is first seen in TV series, in movies and you can see there are still some problems about it, it is even made a way of destruction in anime where people are trapped and experimented. World peace is a great word, but I don't think that it will happen these days.