Blue dominates as a color in the west as it represents 'corporate' and 'trust' to western eyes (if you ever want to got through customs faster at the airport wear a blue shirt). I'd imagine if you did the same ting for Asian companies the predominant color would be red.
Doesn't explain the popularity on that list of orange. I have no fondness for orange (my HN topcolor is a soothing 7BB6F0) and have always been a bit of a loss to figure out why it figures so much. It also tends to be the same shade of orange - whereas at least with blue you get a bigger range.
http://webdesign.about.com/od/color/a/bl_colorculture.htm