When we created ODF 20+ years ago, Microsoft first laughed at the committee at OASIS, then made OOXML to render it moot, then rigged ISO to make OOXML a standard, then implemented ODF and now participates in the ODF committee and helps fund its work through COSM.
#Bluesky is Twitter's OOXML to #ActivityPub and it's at the "rigging ISO" stage.
ODF vs OOXML is not the only example.
In 1998, following the submission of VML and PGML (both vector graphics formats using XML) to W3C, a new standards working group was created, SVG, to take the best of both for the Web. Microsoft decided not to join largely because SVG used so much PGML & promoted VML in its products, implementing it in Internet Explorer and Office so SVG would suffocate and die.
24 years later, Microsoft has deprecated VML and fully implemented SVG.
