Suppose everyone communicates via scribes, who write in ancient Egyptian hieroglyphs, and Microsoft is the only company who trains them.
Now there do exist some talented linguists who can figure out approximately what they’re writing. That’s what the Rosetta Stone was about, except in this analogy there’s no Demotic or Greek alongside, only the hieroglyphs and a scribe to tell you what they mean in English. Unfortunately, after they send the scribes away, the linguists can never be sure that they’ve got it right, especially since Microsoft can change the language as they like simply by changing the curriculum. As soon as new scribes start writing in this new language, the old scribes will stop being able to interpret some messages you receive because they don’t know about the changes in the language.