jeevesbond writes "The BBC is reporting on a move by the UK National Archive to adopt Microsoft's OOXML format. Apparently to avoid incompatibilities between proprietary file formats. Microsoft's UK head Gordon Frazer:
Historically within the IT industry, the prevailing trend was for proprietary file formats. We have worked very hard to embrace open standards, specifically in the area of file formats.
It's an open international standard under independent control. These are no longer under control of Microsoft and are free for access by all.