Earlier quoted context omitted.
Oracle already has a clone that performs an in-place conversion of an installed CentOS 7 system. There is a page describing the conversion: https://linux.oracle.com/switch/centos/ They have a shell script to convert a CentOS install to Oracle Linux, so you can buy support if you want. The converter only works with versions 5, 6, and 7. It does not work with CentOS 8. It would be nice if that could get updated.
I don't think many people who want to use something stable like CentOS, but don't want to pay for a RHEL support contract would want to pay Oracle for RHEL-but-with-Oracle-sprinkles-on-top
Put another way, if you jump ship from CentOS because IBM caused Red Hat to change it into a funnel to pay them money, if you landed on Oracle, you might be setting yourself up to do it all over again fairly soon.