Just a guess - but you are in the US, right? In most other places of the world I have not seen macbooks being used for non Apple related development tasks due to pricing.
I am in Europe, and in the country that used to be a part of USSR. The last four companies I worked for also offered Macbooks for developers by default.
It's interesting to hear. I have not seen a lot of Macbooks in any of the companies I worked for nor the one we partnered with in germany. At least in software development, in creative domains (photo, video) things are different.
In north america Macbooks seem to be more or less the default hardware (also mainly my personal impressions - since I moved there).
That seems unlikely given that the Air range are by far the most popular models, and are squarely aimed at the mass consumer market. Also it’s seems a bit unlikely the masses of people crowding in the Apple stores in the UK all the time are all developers.
