The mmo market is becoming not only saturated but rather linear as well. Swtor tried something new by emphasizing story. We all know how that story ends... Now we have EQN which has promised to innovate and yet again many of us find ourselves with much anticipation for not only this game, but the future of mmos.
Avatar pushed the limit of not only technology, but a movies budget as well. If avatar would have failed many studios would of used it as an example to say no to big budget, risky films. Obviously we know that was not the case and the industry is better because it was such a huge success.
If everquest fails, I feel it will be detrimental to mmos of the future. But if we have another avatar on our hands, not only will soe prosper but the mmo genre will realize that money and risk can pay off and they won't keep remaking the same garbage.
There is a lot more on the line than just soe or everquest
MMO experience: SWG, Fury, Planetside 1&2, AoC, Warhammer, Wow, Vanguard, Firefall, SWTOR, Guild Wars 1&2, D&L, and more I can't remember