Probably not. Certainly not initially. If it was to become genuinely big - odds seem against it on console but who knows - then sure, I could see it driving console sales. But it would genuinely have to gain some serious momentum and word of mouth enough to attract new owners to the console for the MMO.
I don't mean WoW levels of big, but pretty damn big nonetheless.
Also, why is everyone quonting the montly fee - isn't there multiple options? Normally on an MMO if you're serious you don't pay monthly but subscribe for at least 6 if not 12 months which normally brings the cost down.
Not really into MMOs myself, but initial demand seems to be fine if they're having to increase server support and the general feedback seems positive - although perhaps that's just because the last MMO I was aware of was FFXIV and that couldn't really have had worse launch.
Try to be reasonable... its easier than you think...
