Nobody likes change
It looks to me that Google are throwing stuff at walls to see what sticks.
Chrome OS seems to have been reasonably successful, judging by the piles of Chromebooks available to buy, but Android has been too. The beauty of the (more or less) open source nature of these is that others can build upon them (Android x86 being an example).
I suppose over time your cheap Android or Chrome OS device might wind up unsupported, but still functioning as the Chocolate Factory move on to something new.
The Windows development model seems a bit lumbering by comparison.
Biting the hand that feeds IT
