70% of Switch Owners in the USA own a PS4 or Xbox One

[Kerotan]

JRPGfan said:
"Alot of gamers buy Nintendo consoles as secoundary devices.
They play their multiplats on PS4/XB1, and the indie types + Nintendo games on the Nintendo consoles."

I think this plays into that saying.

Agreed. I'd say there's very few switch only owners