That is an interesting move. But with more and more organizations moving to dockerized services the real servers operating system is no longer that relevant.
I do know that rhel provides free access to a subset of rhel packages for docker image building but so many packages are missing that you can‘t reslly use it.
So next step for rhel, allowing dockerized rhel images would be nice. That is a real hurting point you created by your centos change!
As someone who started testing things with UBI images, I have found them to not be that great in terms of predicting how things behave installed under CentOS or RHEL. There are a lot of seemingly minor packaging differences that cause annoying issues when you go to deploy the same stuff on a real RHEL box.
So next step for rhel, allowing dockerized rhel images would be nice. That is a real hurting point you created by your centos change!