Fedora/Redhat is a good example. It could be argued that the Linux distro scene was different 23 years ago, making it harder to be seen today.
The thing I’m pondering is what the openSUSE community actually is. Does it exist as a group, or is it separate projects, each doing their own thing… for who? What is the overlap between people in the various distros, overlap in technology used in packaging and QA etc? Is it meaningful to talk about openSUSE as a distinct community separate from SUSE?