Is nintendo the winner of the 8th gen or the 9th gen?

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xl-klaudkil said:

Ps5 is still sold and will be sold for years to come.
Switch launched in the 8th console genn.

Soo 8th

Duhh

I mean, if you want to get technical, Switch 1 is still sold and may yet be sold for years to come.

And what makes a March 2017 release 8th gen but a November 2020 release 9th gen?