> This is wrong, Linux had plenty of momentum before RedHat specifically was purchased by IBM.

I’m not defending their overall argument, but I don’t think they are talking about the 2018 Red Hat acquisition, rather IBM’s 2000 announcement they were investing a billion dollars in Linux: https://www.cnet.com/tech/tech-industry/ibm-to-spend-1-billi...

IBM has been a big contributor to Linux long before buying Red Hat