Canonical is not a stranger to idiotic business decisions.(See also Unity and their subsequent losing of ground to Mint)
That, combined with their utter inability to take community feedback into account, really makes me wonder whenever they do something like this. It's like traditional logic doesn't apply.
My impression, with no basis in actual facts, is that they spend more than they take in. How many zillions of users do they have, and how many of those actually need support from Canonical, especially when they can get varying degrees of support from anyone with Linux knowledge.
I'm not angry that Canonical has not dedicated a staff member to Lubuntu or Xubuntu, why should I rage over Canonical not having a staff member dedicated to Kubuntu? The community is doing a fine job.
I have no problem with Unity and if I did, I have no problem installing Xfce either.