not only ignoring market share, the assumption of positive near zero growth (less than 1% / year) via added Ultrabooks IMO is the least founded one: for one thing, current rise estimates there come from minuscle numbers, so growth should slow down there as numbers grow plus such numbers are notoriously unreliable, and - for me more telling - Apple showed a 7.5% decline in Intel machines as well, and they have had their version of Ultrabook already in place - MacAir was nothing new in 2012, as even 11' MacAir had been modified mid 2011 for the first time.

>He was rebutting the claim that Windows is dead, which is based on Windows numbers compared to other devices. His claim is that adding ultrabooks to PC turns the tables- but he seems to ignore market share.
>
>Example: here's the figures that he's relying on and published in his article. These are shipments in 1000s of units:
>
>For 2012:
>341,263 PC (including notebook)
>9,822 Ultramobile
>116,113 Tablet
>1,746,176 phone
>
>And for 2017:
>271,612 PC
>96,350 Ultramobile
>467,951 Tablet
>2,128,871 phone
>
>His argument is that the shrinking PC numbers are what caused the prediction of doom but if you add PC and ultrabook, 2017 is more than 2012, hoorah. But look at the total numbers! Tablet has overtaken PC that shrinks from 16% to 12% of market even if you add ultrabook. Phone and tablet is where it's at- and when you look at OS market share in those, MS is in trouble. It's clinging on only in the shrinking PC market even if you accept Bott's assumption that all ultrabooks will be Windows.