Its all about the direction and decision of the company. SE certainly has the money to market/support FF14 if they wanted to.

I think,
they just made a shity game. and rushed it out before WOW expansion. They know the game would not sell well. So they refuse to put more money into marketing and operating cost (Sounds like something, the old EA would do). Compare to FF13, 14 hardly got any marketing/hype.

NCsoft on the other hand, makes better MMO.