It’s good history, I don’t think it really has any bearing today though.
Novell purchased SuSE Linux AG. Novell signed the agreements, and they were very controversial at the time. Novell was much more involved in the day to day than IBM is at Red Hat, SUSE was not an independent business they were a big part of Novell (the SuSE founder left at one point because of how they ran things, he did eventually return). Novell was later purchased by Attachmate, which made SUSE an independent business unit, both were acquired by Micro Focus. It was sold to EQT Partners in 2018 and operates as an independent business today.
Novell and today’s company are not the same, they’ve gone through significant changes multiple times, which is maybe a better reason to at least put in some thought.
(The end was not very clear, but I was merely pointing out that the changes in ownership might be a reason not to go with SUSE)
Around that 15 year mark Novell was also in a lawsuit with SCO regarding ownership of Unix copyrights, their success is the primary reason that SCO disappeared. I think this was a much larger deal than the maneuvering Microsoft was doing (except when Microsoft was giving money to SCO).