Ô_o It was an MMO. A damn good one too.
The problem was that they decided to set the game inbetween ANH and ESB. A time period that is supposed to be devoid of Jedi.
But the game developers wanted to have their cake and eat it too and so added Jedi as a secret class that people had to figure out how to unlock on their own.
After a long while no one had figured it out and SOE was worried that they were going to have to start facing accusations that the class was a lie. So to combat that they introduced holocrons that revealed that to unlock the Jedi class you had to master two specific professions that your character was randomly assigned.
This would prove to be the death knell for the game. Before this, everyone played at a leisurely pace, experimenting with different playstyles and skill configurations. It was a bustling community of easy going folks.
Once the holocrons were released everyone started grinding through professions trying to be among the first to unlock this now legendary profession. This led to droves of people burning themselves out and leaving the game after taking all the fun out of it for themselves. Which led directly to SOE trying desperately to increase subscription numbers by introducing the NGE which basically turned the game into a WoW clone and that put the final nail in the coffin.
Which is why had they set the game in a time period where Jedi were common in the first place it never would have self-destructed.