A real shame. I got the game a few days ago and am enjoying it so far, but I have to admit that it definitely isn't for everyone. But I believe that sometimes, you have to take a risk as a developer and as a gamer. Hell, if AC 1 hadn't sold somewhat admirably, we would never have gotten the far superior AC 2 and Ubisoft would not have created what is arguably their strongest IP now. It can go either way and I'm sure all the involved parties took a calculated risk when settling on the idea for this game.
Still, these initial figures don't have to mean anything. If they get comparable sales in Europe and North America and keep a somewhat steady level, the game may very well sell a few hundred thousand in its lifetime. While that still isn't much, they really just need to break even (which should be relatively easy given that this is really not a AAA game with crazy high production cost) in order for them to consider making a sequel. Also, the install base should definitely increase in the coming few months, or next year with MK and Smash at the latest. Many might want the game, but aren't going to pick it up until they get a WiiU with Wind Waker or 3D World or whatever game they consider worth buying a console over.
I really wish Platinum and Nintendo the very best on this one. I've done my part by buying the game and can only wish other people would give this very fun title a chance.