I've worked in Vancouver at a startup, and to me it seems that the goals of a Canadian startup are just more conservative. No one ever expected to become a Facebook, or a Google or even Nortel or RIM for that matter.
The philosophy has been mostly to create a profitable company, in the more traditional sense-- consistent revenue that can employ people. No one is looking for giant cash injections from VCs, nor are we throwing lavish parties and giving away Porsches at company picnics (cough Trilogy cough).
We aim smaller than 'murica so of course we don't have any mega tech companies. And we're happy for it, at least I know I am.