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.

Thanks Very Much >All
>>2
You are a big fan of DQ in America aren't you? Me too.
I guess DQ7 was failed sale in US, so DQ4remake didn't release.
>>3
Yes,I know it!
>>4
Thanks you write a long sentence.
But it's very long and very Difficult grammer!
I can't translate it.I can speak English but a little.
Sorry. Please could you write　more easier?
>>5
Thanks.
Cause of DQ7 wasn't Good sale is graphics? OK?


Sorry. I'm afraid please write a reason more easier>all