Because FFXI in its EQ-timesink-copying glory would not have held a candle to the likes of rift and WoW.I'm starting to get tired of seeing people say crap like this.FFXI was hard and it was ok for that time but soon dumbass wow came the challenge of mmo went to easy mode.
The "challenge" in FFXI was having enough time set aside to get anything done. If you weren't the "right" job you were stuck waiting for hours for a party. Same thing for missions, because everyone went for the "best" and "most efficient" strategies, nevermind how you felt or how you preffered to play a class that due to the developers' screw ups in design turned out to become unpopular. There was no skill involved because all you had to do was stack stats against everything tossed at you by swapping gear mid-combat. And things that are supposed to be features and additional things in the game were designed to be inconvenient to the player to create more timesinks. Timesinks and stat stacking do not make a game difficult.
Now try and tell me why things like Sarth+3, Firefighter and Alone in the Darkness were easymode.