Who would have thought that anyone would produce a converter between Office Open XML and any other format? I mean, it's XML! People can read XML themselves, right?
Why would you ever want to translate an XML format into plaintext, or HTML, or RTF, or CSV, or ODF, or XAML, or Bork, or... anything!?
I mean, what's the point in publicly publishing the format (and doing this) if other people are just going to go and use it!? It boggles the mind!