My original point was that the analysis was flawed. Using Steve Job's truck example, a useful analysis would have determined Microsoft's share of the "truck" market. We all know they are only wannabees in the mobile market.
Sorry I don't consider my iphone or ipad the same as my desktop. They are really a different market.
The chart is interesting though, the iPad did have a significant effect of PC sales, but look at what release of Win8 in the 3rd qtr of 2012 did.
How do you play something from your NAS? I don't run itunes all the time and when I do it tends to disconnect, it is on a windows machine after all. Many of the videos I get from TV stations are using Flash so an iOS device simply won't work.