I would assume here in the United States the vast majority of arranger players are hobbyist that play at home. I assume this because while I do see arranger keyboards for sale in the stores, I’ve only seen people actually performing in public on arranger keyboards just a few times. So yes, there some folks out there performing in public on arranger keyboards but they are few and far between at least in my area. But if you go into Mexico it’s a different situation.
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It not the keyboard, it's the keyboardist.

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