I'm imagining Canonical might chip in the remaining money at the last minute?
http://www.reddit.com/r/IAmA/comments/1j166z/hi_im_mark_shut...
"Lots of folks have speculated I might close the gap if it's close. But I think that would not be in the spirit of the project; rather I would hope someone smarter than me will come up with a better concept that DOES get greenlighted, because I really believe in the idea of crowdsourcing the signal to innovation."