For what i understand they will fork the last version of RHEL and them just keep updating themselves, but i haven't really looked into it to know if that's the case
It's funny because this is a pretty obvious just PR grab by SUSE. SUSE for years now has already provided updates for RHEL. Part of their strategy for selling SUSE Manager is that you can update SUSE and RHEL from it without any vendor lock-in. It's a SUSE repository that provides those updates not Red Hat. It looks like the only thing changing is they'll provide a base image now too.
RHEL is not going closed source. That would be illegal for at least the copyleft components. They provide the full sources in the customer portal which is crap but not the same as closed source.
That part i understand, but is not a viable way to fork into another distro every update, ecen tho i believe or rocky linux or alma linux was going that route for now
Alma is actually doing the correct thing. Alma seems to be about the only group that realized what Red Hat is doing. Alma is now going to be based on CentOS Stream and will no longer be "bug by bug" compatible with RHEL. Instead they will, like CentOS Stream, be ABI compatible with RHEL. Not only are they going to do that, but they're actually adding to CentOS Stream to meet their customer's needs and contributing back to the community project. Kudos to them for making the community stronger.
Rocky does not do that. Rocky hired sales people away from Red Hat, then started poaching RHEL customers by offering support at 20-30% of the cost. A savings they can afford because they're not putting in the engineering effort. They were taking all the work Red Hat put in, stealing their customers, and contributing nothing back. Rocky is now talking about using gray areas of legality to try and get source rpms from the UBI images and from cloud instances. They essentially want to rent a cloud instance on AWS, clone the entire srpm repo for export, then destroy the instance.