I think the real question is if a western developer would be willing to make a completely linear RPG(story-wise). I think that would make an RPG like FFXII(in terms of game design). In the game, the story is linear but the world is free to explore for the most part

You guys seem to go one sided. You are telling me it's possible for western developers to make something that fits the terms of a "jrpg" , but you aren't telling me the same for the other.

in the light of what i said above, I don't believe this. Of course you can try to add those japanese elements, but it will be artificial, never authentic, you will be searching and trying to make something japanese while it's not your own style. In art it would mean that someone from let's say the cubic art style (school like they say), would try to draw a impressionist painting, but he will be searching where he can implement impressionist elements, but it won't come naturally or authentic and won't ever be original. It will be imitation. Like the romans said, 'imitatio'.  

Why not combine all types of RPGs or even create your own type?

We're in 3 then ^_^

I'll add Silver although it is an action RPG

 Well Etryan Oddysey although having manga arts has a gameplay structure that remember CRPG like Dungeon Master and Eye's of Beholder.

 I have that, but never really gotten into it. I might try that out again. 

Also nobody answered my question " Could it be called a (X)rpg if it doesn't come from the region where this (X)rpg comes from." 

I think yes.

In my opinion a CRPG is a videogame that try to copy to a certain fedelity degree real role playing games and has a setting inspire bywestern fantasy book ( or sci-fi or steam punk in less degree ).

A CRPG has generally more freedom than JRPG and it is more customizable.

JRPG focus its appeal on its storyline and is mostly inspired by anime and manga ( japanese ). Also it is generally more simple ( CRPG born on home-computer with Ultima and Wizardry while JRPG born on Famicom with Dragon Quest and  Final Fantasy so they had to adapt to simple input of Famicom pad and Famicom userbase's reference were children ).

JRPG is a more linear experience and it is based most on concept of interactive adventure.

In fact many don't consider JRPG true RPG.

I think that because manga and anime spread successfully in western region from the '80, japanese manga art style is accesible in western nation for western developers while japanese tend to re-adapt western typical scenario like gothic with their particular aestetical taste ( ie: japanese heroes are always slim while western heroes have generally big muscles ). 

Another fact to consider is the success of Final Fantasy 7 even in western regions ( 9 million copy !). Some western developers tried to copy it to gain similar success ( ie: Silver ).

Arcanum was pretty non-linear. You could complete quests out of order and in varying ways. You didn't need to follow the story at all. You character stats changed the gameplay. Not just from a fighting perspective. If you character was really dumb you could only grunt and people treated you like an idiot. If you were an orc or orge you were subject to racism. Not only did it have multiple endings but it also had multiple endings for the different areas in the game. So all the quests you did in an area and how you went about doing them, or if you neglected the area etc effected the ending you got for any given area after you completed the game. It was non-linear in a number of ways.

BTW you could set the fighting system to turn based if you wanted to. Not that turn based gameplay defines whether its JRPG or not as it most certainly wasn't.