I would love to see a similar article diving into Amazon's use of RHEL5, and the eventual slow move to "Amazon Linux".

At one point, I had a RHEL5 desktop in Seattle, which I could (and had to) develope remotely on from the Toronto office[0]. The software libraries we used depended on something that RHEL5 had and newer versions of Red Hat didn't, as I understood it. Eventually a new and fantastic manager joined the Toronto office and convinced senior management to at least ship the desktops to Toronto.

[0] At the time, the 'office' was the warehouse in Mississauga.