From what I've seen big enterprises have thousands of RHEL or SLES licenses and the whole thing is managed by one guy who can hardly migrate from RHEL 7 to RHEL 8 because of the huge backlog of work he has.
For the average enterprise switching from SLES to SUSE RHEL means that update will happen in 5-7 years
For the average enterprise switching from SLES to SUSE RHEL means that update will happen in 5-7 years