There is, its called Everquest and they have just released expansion number 18 I believe. Oh and apparently 1 of the aborted game designs was a graphically updated version EQ. SoE decided it would be financially viable (probably right too)
What have all the recent failed MMOs taught us, Newbie?
Isn't it that the people who make decisions about "financially viability" literally don't have a clue? Financial analysts and business people can't design games because game design is art.
How many modern, "accessible" MMOs have fallen by the sword now? Must be into double figures by now

Yet people like yourself continue to clamour for more "casual" games, that you can be done with in a month or two, and then move on to the next short-lived disaster. Don't you want something more?