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.

>>1
Because in America we tend to buy RPGs that have actually moved forward in some way since the 1980s rather than keeping the same shitty mechanics they had two decades ago and trying to hide it with anime art.
And I'm not just putting down JRPGs here, plenty of JRPGs have made progress. Just not fucking Dragon Quest.