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.
What if they technically allow redistribution, but terminate access to recieving updates for doing so? So you can distribute a copy of version N, but if you do so you will not recieve version N+1, and therefore will not be able to get source code for version N+1. Not sure if this is how it is in their contract though.