Rebuilders are fine, and RedHat is fine to not spend the effort to debrand their source rpms. The problem is one of value. The value RedHat provides for some people is probably worth more than RedHat charges. The value RedHat provides to others is less than the effort it takes to renew a developer license once a year for 16 installs. The problem is that there are several who are ending support for RHEL because they fall into the latter group (notably Jeff Geerling for ansible roles). RHEL losing out on that support might be huge, might not, only time will tell.