I think a lot of companies are using RHEL and Alma/Rocky side by side. Because they are compatible, because people have an easy time to switch between them. I don't think that those people will move their license free servers to RHEL, but they will probably switch to Debian/Ubuntu.
So in the end Red Hat will have a smaller market share and less support from the community. Currently most software provides a package at least for RHEL and Debian/Ubuntu. That may change in the future, if the amount of RHEL compatible systems drop significantly.
So in the end Red Hat will have a smaller market share and less support from the community. Currently most software provides a package at least for RHEL and Debian/Ubuntu. That may change in the future, if the amount of RHEL compatible systems drop significantly.