Ouch. Xbox One doesn't even have one vote. I think that's for a few reasons
-The underpowered Xbox One. Yeah, it was a generational leap over the Xbox 360. But the 360 was way more comparable to Gaming PCs in 2005 than the One was to Gaming PCs in 2013 (same dynamic with PS3 in 2006 and PS4 in 2013). Xbox One X fixed this, but it's not the base console and was sold as a premium offering.
-Xbox Series X/S are very similar to Xbox One but with SSDs, better specs (namely Xbox One vs. Series X) and a larger game library. It's only some Kinect 2.0 Xbox One games that aren't compatible with Xbox Series.
Lifetime Sales Predictions
Switch: 161 million (was 73 million, then 96 million, then 113 million, then 125 million, then 144 million, then 151 million, then 156 million)
PS5: 115 million (was 105 million) Xbox Series S/X: 48 million (was 60 million, then 67 million, then 57 million)
PS4: 120 mil (was 100 then 130 million, then 122 million) Xbox One: 51 mil (was 50 then 55 mil)
3DS: 75.5 mil (was 73, then 77 million)
"Let go your earthly tether, enter the void, empty and become wind." - Guru Laghima