Cross-ownership of Switch and PS4/Xbox One in the US remains high. According to PlayerPulse from @EEDAR over 50% of US Switch owners also own a PS4, and over 40% of US Switch owners also own an Xbox One.
— Mat Piscatella (@MatPiscatella) January 31, 2019
This is for the US only. I have an XBO+Switch combo when it comes to consoles.