An unsually poor article
Firstly, Apple's pricing is very high and leaves a lot of margin room. Apple simply can't make the volume to change this; or rather, it would be too risky to do it. Apple doesn't need to change strategy, but there is a lot of volume which means a lot of money left on the table.
Secondly, OEMs don't need to command such high margins as Apple since their costs are much lower. It's a different business model. PC manufacturers don't have anywhere near the margins of the Macintosh, but there are a lot of PC OEMs. Thirdly, wearables are a new high-growth sector. Apple's watches don't work without an iPhone, which means they have left the very large Android installed base to Android manufacturers. If the rate of innovation in wearables and mobiles continues, Google's added-value will be important. The undeniable fact is that if you want to make mobile hardware, you need Android, unless you are Apple. Microsoft will spend a few more billions dollars before it is forced to concede this; everyone else has worked it out already (vale Tizen).
Fourthly, how does this theory explain the rush of PC OEMs into Chromebooks, which are low-priced, low margin and also run a free Google OS? Because OEMs make money on low margins. This is what they are good at. The idea that only Samsung and Apple make money from smartphones is wrong. It may be that some manufacturers can't move with the times on this, but plenty will rise to take their place. At this point in the lift of microcomputers, Dell, Asus and Acer didn't exist yet.
Fifthly, you gloss over the middle of the market as if this is a bad place to be, but in fact it is where most of the money is.