I don't think so. The important difference being that CentOS is/was downstream of RHEL. So, repacked RHEL to remove the branding, but otherwise exactly the same

I don't think so. The important difference being that CentOS is/was downstream of RHEL. So, repacked RHEL to remove the branding, but otherwise exactly the same. This obviously competes with RHEL directly if you feel like you're able and willing to support the system on your own. On the other hand, Fedora is upstream of RHEL. So, it serves an important role as a testing ground for stuff that may or may not end up in RHEL later down the line. I'm pretty sure you're safe, as it actually fills an essential role that is useful to Red Hat and that is very unlikely to eat into their main business.