Microsoft employees and Microsoft-sympathetic bloggers like Alex Brown are hopping on Alan Bryden's dismissive remarks of denial [1, 2, 3, 4] and use these to clean their own consciousness out in public. They try to pretend that they don't know what happened. It was a similar story and a case of rewriting history just a fortnight ago when Bill gates was preparing to leave [1, 2, 3] and play politics instead. It's totally missing the point.
In any event, here is a new video explaining the importance of ODF. OOXML was nothing but an attack on ODF and its goals. It was reactionary. ⬆
They don't care about the users and issuing a few bytes with random characters costs them next to nothing. It gives them control over billions of human beings.
If even one media outlet told you in 2010 that Microsoft would fall from 100% (of Web requests) to about 1 in 8 Web requests, you'd probably struggle to believe it