Also, I do find your lack of respect and gratitude for Red Hat for releasing all their stuff fully open source and allowing projects like CentOS to flourish despite the cannibalization quite distasteful. Not that you care what I think, but it definitely smacks of entitlement mentality.
Edit to clarify: RHEL and CentOS are binary/ABI compatible to the point where you can switch repositories, overwrite a couple key packages, and now you have the other system.
Getting the source code for RHEL, making the necessary modifications and releasing it as CentOS is a whole different thing.
Simply put, just because you may not know of anyone in your immediate professional or social circles using RHEL, does not mean it's not extremely popular in the capital E enterprise.
AFAICT, RHEL is the Linux distribution of choice in most enterprise IT organizations /because/ of it's commitment to long-term support, stability, ABI compatibility, programs like EUS, and so forth--the list goes on.