Andy Jassy's keynote from this year's AWS conference (amazon's web service business) talks about running AWS as a high-volume, low margin business and why that'

Andy Jassy's keynote from this year's AWS conference (amazon's web service business) talks about running AWS as a high-volume, low margin business and why that's so different from high-margin businesses. The whole keynote is interesting, but here is the part that's pertinent to this discussion: http://www.youtube.com/watch?v=8FJ5DBLSFe4&t=30m35s http://www.youtube.com/watch?v=8FJ5DBLSFe4&t=30m35s