Another reason why Linux will take over the world. 25 Years After DOS: Lessons Learned for Linux by Walter V. Koenning for the Reallylinux.com OPINION/EDITORIAL section. NOTICE: Our other recent OP/ED postings include: Microsoft’s Approach May Isolate U.S. Permanently Open Source VS Windows: Reality of a Better Paradigm Microsoft Corporation is preparing a gallant pageant to celebrate 25 years of what should at the very least be considered remarkable marketing. But what can the Linux world learn from Microsoft’s past 25 years of unique experiences and domination? I think we can uncover a lot simply going back to that first fateful year when Microsoft released PC-DOS for IBM PCs (as a joint venture with IBM).