Do you ever comprehend anything as it really is, or do you filter everything you read through that MS filter of yours?
This whole debate was about formats, not products. The proof is the fact that it was a FOSS group that produced the MS plugin. If they just wanted certain products, they would not have produced that plugin.
They only developed it after it became obvious they weren't going to ditch MS, under any circumstance. The open source pushers proved they could do it in no time, had the format alone been their original goal.