I mostly like their use of an immutable OS as base layer for the virtualization - despite the limitations it sometimes has.
I liked it when I used it, but it wasn’t really a fit for our environment from what i’ve seen.
I remember since the start that SUSE was more popular in Europe, but no way would that be the case in the US. If anything, I’d be willing to put my money on > 60% of Linux installs being RHEL/Centos rather than SUSE
Also, from my own experience, SUSE used to have nearly all of the US geointelligence processing because of the HPC connection mentioned elsewhere with CrayOS, but that went away when DNI forced everyone onto the CIA's private AWS service, which only had RHEL AMIs available. The national labs and more niche intelligence processing that can't run in the kinds of machines AWS provides still make heavy use of it.
>> "More than 60% of the Fortune 500 rely on SUSE to power some of their workloads, according to the company."
This is an Enterprise version of Linux, and unless you are in the enterprise space you're unlikely to come across it.
Also from the article; >> "The company generates about $800 million in revenue "
So again, this suggests that people are indeed using it.