I don't use Microsoft Office, so I don't know. Same with PDFs, I don't use Adobe.
Same, and neither of us is having a particularly fun time when we get sent a .docx or a strange PDF that refuses to be opened and correctly edited without Adobe Acrobat (not joking, this happened to me once).
Regardless, OP said "it always ended up with the open standard not being used anymore." Both of those standards are being used, and even if OpenDocument and PDF had been extinguished it still wouldn't matter because any open standard still being used is sufficient to disprove OP's position.
Fair point. But both of them suffer from being adopted and then maligned by the corporate entities that picked them up, which is a part of the cycle. First it gets adopted, then "slightly tweaked for features" and then its (usually) unusable on other platforms that dont want to adapt to the corporate vision. Granted, OpenDocument has a different history and both it and PDF are old enough to not actually fear that they will be replaced be corporate "alternatives", but that they did generally follow the cycle but didnt finish it doesnt necessarily disprove it imo.
Emrace-Extend-Extinguish is something worth paying some concern to, but it's not some kind of unstoppable boogeyman.
Absolutely. But that doesnt mean we have to attempt giving it a fair fight. They dont intend to either, its antithetical to the point of EEE.