Quoting Xose Vazquez Perez xose@wanadoo.es:
SuSE only has released United 1.0 sources at ftp://ftp.suse.com/pub/unitedlinux/1.0/src/ but no updates. Neither public sources nor binaries, only to his customers.
While you are very correct, I think there is something else that is not considered.
You _can_ bundle GPL and non-GPL software together, even non-GPL "compatible" software. You just can't have GPL software rely on non-GPL "compatible" software (except for the system-level exception).
In the case of a distro, you do _not_ need YaST to run the software. Yes, it makes it a pain to support (let alone install). And you are _free_ to take all the 100% redistributable components off the SuSE distro.
But make no mistake, SuSE does _not_ release a CD image that is 100% freely redistributable. Many components have _strict_ redistribution requirements.
In the case of Red Hat, this is _only_ its trademarks (which is for support reasons). But Red Hat _does_ make it semi-easy to remove them via Anaconda, and I assume Fedora will make this even easier.
I much prefer Red Hat's strategy.