People use rocky/centos because they don't want to deal with the hassles of licensing while also keeping the door open to an upgrade to RHEL if needed. I think this will be a net positive for Debian and Debian-based distros thanks to enterprise infra switching to Ubuntu which offers this (free use and an upgrade path to full compliance/commercial support.
Them closing up completely undermines their UVP.
Good. If you want to encroach on the rights of your people, at least do it properly via the legislator.