I'm not sure I agree. The author seems to be comparing Red Hat with Ubuntu Desktop. That's not really a good comparison to make. Ubuntu Desktop is geared towards home and small-network settings. For larger deployments, Canonical recommends Ubuntu LTS, which has a 3-year support guarantee and a 2-year release cycle. I don't think that's too far removed from Red Hat's release cycles.
I think part of that has to do with their SLA, which IMHO has always kept them back a few years.<p>I don't know if Ubuntu is pushing the "enterprise" thing like RH does, but that is one of the unfortunate things that come with that territory. It's easily remedied by adding a new repo or two in `/etc/yum.repos.d`