As far as capital for Ubuntu I would imagine that given Shuttleworth's current financial
position and the apparent soft place in his heart he holds Ubuntu that it's likely that even
if Canonical ran out of money and couldn't obtain capital from the open market that
Shuttleworth himself would reinvest. I'm not speaking for him or saying it's guaranteed but
based on his public statements and the positions he takes on the company it's my belief he
would keep pumping money into the company until it does become profitable. I wouldn't worry
much about their survival. From his statements he sees the project for what it is, a long term
investment in something that is very likely to pay off substantially down the road as the
Linux desktop becomes a reality.
There is no question in my mind that Linux as a whole will take over on the desktop. Not even
MS can sustain the development effort that goes into Linux just to keep Windows on the same
level. Given how far behind Linux was even 5 years ago and how viable they are today you can
see the progression is an order of magnitude faster than commercial development.