Not enough Horror MMORPGs

I have noticed that there are barely any horror MMORPGs out there. It can be a very popular industry and the only popular horror MMORPG out there is requiem bloodymare. Which is a good game and has very good graphics although its the only one of its kind and none of the other MMORPG companies tried to create anything similar to it. Although considering how good requiem bloodymare is i suppose it would be quite hard for another company to match it with another horror MMORPG. Therefore currently Requem Bloodymare is dominating the horror MMORPG genre but that is not to say that its the only horror MMORPG, also Hellgate London used to be a successful horror MMORPG but it has been shut down for several years now.