It's not mentioned here, but I think it's in the book they mention (and the BBC documentary based on it): containers were "open source" in the sense that they allowed anyone to use the patents, which was vital in kickstarting the network effects.
It chronicles competing standards, proprietary efforts, attempts at sea-rail-road integration, with some lively characters thrown in. It captures the entrepreneurial vibe of the heady postwar decades. I loved it.
Absolutely fascinating.
http://news.bbc.co.uk/2/hi/in_depth/business/2008/the_box/de...
But the also had a more traditional documentary called "The box that changed Britain":
http://www.bbc.co.uk/programmes/b00scpzn
You can watch the first five minutes here: