WHY DQ isn't popular in America

Hello!Nice to meet you.
I'm a Japanese.
Well...I have a question.
Why the Dragonquest (In America it called DragonWarrior) isn't popular in America?
DragonQuest is most popular RPG in Japan (than finalfantasy).
It's wonder for me.
WHY?
Could you tell me your thinking(opinion?)about it?

Sorry,Poor English.

Actually the reason that DQ series is not popular in the United States is very simple.  It just is not advertised.  It should come as no suprise that people will not buy a game that they never hear about.  As mentioned in a previous post, the reason FFVII sold so very well in the United State is due to the large advertising campaign that backed it up.  So to be blunt, the lack of popularity of DQ in the United States is the fault of the marketing department failing to ensure the consumers hear of it.