What is microsoft actually trying to achieve? (Score 5, Funny)

Can anyone with some insight into the matter explain to me why microsoft is trying so badly to get OOXML accepted as a standard, and doesn't simply support ODF? Are there technical reasons (are Microsoft Office documents somehow easier to store in OOXML than ODF)? Political reasons (is Microsoft trying to control/corrupt an open standard, kinda like they did with Internet Explorer and HTML)? Cause in the end both formats try to be the exact same thing: An open standard to store documents. Why go through all the trouble?