Re: how does Canonical make money?
We will never, ever charge for Ubuntu. Our site (and the default page on installs) very prominently says this.
The best answer I've yet heard to this question has been from Jeff, who said something like this: 'the thing is, all our guys are very well-respected open source community people, and they've all left prior jobs -- most working on open source -- to come work for us; they wouldn't just leave on a whim'.
daniel dot stone at ubuntu dot com