Normally when people talk about pro/enterprise/premium, what they're really talking about is long term support for a "stable" release, since that the thankless

Normally when people talk about pro/enterprise/premium, what they're really talking about is long term support for a "stable" release, since that the thankless backporting work that you need to pay people to do. And those are all rolling distros, so I don't think they're a fit for anyone with that class of enterprise needs. NixOS has supported releases, but as far as I'm aware, each one gets less than a year— 22.11 was just deprecated in favour of the current 23.05 and the upcoming 23.11.