It is and it isn't. They have a huge commercial interest in not unnecessarily sharing money with Red Hat for customers that basically need a supported/certified platform primarily for their Oracle products. SUSE has had fairly recent management changes (including ex-Red Hatters coming in). Red Hat should probably never have acquihired the CentOS team in the first place--not a comment on the people but bringing CentOS in-house with all that implied. And the others are fairly small.