Standards?

You may not remember but I had a bit of an argument with the organisation that builds infrastructure for the railways.  I won't go into it again, but the reason that they gave me for not installing electric vehicle charge points as per their policy was that they didn't know what the standard was going to be at some unspecified point in the future.  I pointed out that every electrical device sold in Australia (including every electric vehicle) uses the same domestic plug standard.  Apparently that's not good enough for them.  Then I saw this on xkcd.com