A superficially modest blog post from a senior Hatter announces that going forward, the company will only publish the source code of its CentOS Stream product to the world. In other words, only paying customers will be able to obtain the source code to Red Hat Enterprise Linux… And under the terms of their contracts with the Hat, that means that they can’t publish it.
Some of the changes in GPLv3 seem to address this type of behavior. There might be some narrow gaps that Red Hat is taking advantage of, but the folks at GNU at least made things harder.