Wondering about licensing?
I was wondering under what license SUSE Liberty Linux Lite for CentOS 7 would be provided given most of any distro is GPL?
Presumably SuSE will resort to the same licensing shenanigans as Redhat viz provide sources to customers but restrict its use (including redistribution) by the contract's T&C.
Otherwise one could license 1 (or a 100 :) systems, acquire the distro's sources and create a rebuild, although on second thoughts perhaps that is the reason for the USD2,500 minimum spend. ;)
If I still had a 1000+ CentOS 7 systems I might consider USD25,000/year the least of my problems.
Unfortunately RHEL7/CentOS7 is the last system that a lot of proprietary software runs on.
None of such software has any great merit other than later versions are much worse (unusable), some have a mixture of 32 bit and 64 bit binaries and shared libraries, others have binary only kmods for a proprietary isa/pci[e] card that talks to an instrument or tool, and the product is long abandoned and so on.
In many such cases just stripping the distro to the absolute minimum hopefully removing most potential attack vectors, restricting access and further hardening the platform to produce a mostly read-only appliance to do only what is minimally required (and no more) is one reasonable option. From my experience in such circumstances the rare cases of patching security vulnerabilities and rebuilding the few remaining packages (rpms) is not that onerous.