You may have read something in my comment I didn't (mean to) express - none of thr companies open source their crown jewels (e.g. Windows). I subjectively don't

You may have read something in my comment I didn't (mean to) express - none of thr companies open source their crown jewels (e.g. Windows). I subjectively don't see how Microsoft can be seen as the most open, and I was curious to know how parent came to that conclusion. Microsoft (and perhaps Apple too) are the ones with a history of antagonism with open-source/GPL.