Long ago, I stuck with Windows because I misjudged Linux. Now, I wish to clear up some misunderstandings; here are 6 things ...
Classic Unix tools (ls, cat, ed, cal, dc) and games show modern OS lineage ...
The OSI really had one or two jobs, which are interconnected; one was to approve "Open Source" licences sent its way and the other was to "enforce" or "protect" the brand (an overlapping task).