There's a lot of CentOS 7 in various USGOV and adjacent (suppliers/service providers) who are stuck facing purchase of RHEL8/9 licenses or migrating to other distros - as CentOS 7 going EOL on 2024-06-30 means you can't use it for federal systems without each federal client getting a waiver.

You have to either go with another distro or provide your own support (essentially your own fork).

Those who want to stay with RHEL-like but not deal with actual RHEL licensing are often going with Alma or Rocky.