However, this totally kills my hobbyist usage at home about three to five years from now. I only ever use Photoshop, Illustrator, and occasionally After Effects for my independent design projects, and was finally able to justify upgrading from CS4 to CS6 a few months ago. A few hundred dollars every few years is worth it to pursue my own experimental work.
But I'm not going to justify $50 per month for that, and I have a hard time imagining others justifying it. I think Adobe just priced themselves solidly out of the prosumer market.
(Just to add a little math to this: A $700 upgrade every three years comes to $20/month. If Adobe can offer an a-la-carte Creative Cloud where I can get three or so apps when CS6 finally no longer cuts it, I suppose this will ultimately be a non-issue.)