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https://www.lpi.org/blog/2023/07/30/ibm-red-hat-and-free-software-an-old-maddogs-view/
https://www.lpi.org/blog/2023/07/30/ibm-red-hat-and-free-software-an-old-maddogs-view/
It's a pretty long read but overall it's very informative and interesting if IT history is your thing. Even better if you use text to speech.