But they're not. Let's say you download RHEL 10.0 someday. You download RHEL 10.0 source code. Some of which is GPL'ed. You rebuild and call it Acme Linux 10.0.
Red Hat says "bye, enjoy distributing that, no more RHEL for you." You still get to distribute what you already have. That's what the GPL entitles you to - it does not entitle you to a business relationship with Red Hat, ever. But your ability to distribute that source is preserved.
Red Hat releases 10.1. They do not have to distribute that to you, nor give you source code, you're no longer a customer.
Whether this is in line with the spirit of the GPL or not is another story. But at least as I understand it, it does not violate the GPL.
Red Hat says "bye, enjoy distributing that, no more RHEL for you." You still get to distribute what you already have. That's what the GPL entitles you to - it does not entitle you to a business relationship with Red Hat, ever. But your ability to distribute that source is preserved.
Red Hat releases 10.1. They do not have to distribute that to you, nor give you source code, you're no longer a customer.
Whether this is in line with the spirit of the GPL or not is another story. But at least as I understand it, it does not violate the GPL.