With the very good sales of XBSX so far and with outpacing 360 and XB1 at this point in time and even sticking closely to XB360 in japan what is the lifetime total you can predict for the system ?

72 million units.

75-80mil doesn't seem to unreasonable.

Less than 60 million.

They keep pushing themselves further and further from the hardware, and I can def see a new affordable portable pc market with docking station becoming the new stuff for the generation, pushing people who want to play on Game Pass using this instead

That doesn't make much sense.

With PC components everyone wants some profit and it's much more difficult to cross-finance with software sales. As such, an affordable portable gaming PC with Docking station would be more expensive than a series X no matter which way you turn it - and less powerful than a series S while doing so. Just look at the price of the Steam Deck, $529 for a version who's actually worth it (the 64GB MMC version is too crippling).

Also, my biggest complaints about the Steam deck are it's weight and battery life. If you want something powerful enough, the battery needs to be big and heavy. Right now, we're not yet at the point where you can get enough battery life with enough performance to consider it enough of a competition to the Series S/X. Maybe a couple years down the road, but by then, the Series S/X will already be damn close to those 60M.

In the previous 3 polls I have had a somewhat high prediction of 88. For the sake of consistency I will keep it the same. Holding at 88.

I'm thinking 70+ million.
Can definitely challenge X360 though.

Voted 75-80. I'm a bit surpriced that one of the most popular options is less than 60. It is doing is doing a lot better than the Xbox one and that did 50 millions. Microsoft says it is seeing growth in Asia. I just don't see it doing less than 60.

That's true. Kinect did a lot of push 360 sales. With that said, 1st party releases will certainly be stronger in the 2nd half of this gen, which will certainly keep the system relevant for consumers. There is a reasonable chance Xbox will have its strongest 1st party portfolio than they ever have when this gen is all said and done. Software support should push the system to get close to 360 numbers. 

I'd say somewhere around 90 Million. This generation is just starting and none of their big games have been released.