"... Which begs the question “do ‘aussie’ startups really need them?” Could the continual scarcity of capital and local entrepreneurial mentoring, be a breeding ground for a new form of Startup? ... and you said:`I think this is exactly the type of startup YC breeds` ..." ~
I added this comment before I posted here and while I didn't have Omnisio specifically in mind you pretty much confirm what I suspected.
It's funny - 100,000 ex-pat Aussies in California, and I only ever run into people I went to uni with and are now working for Google.
There are a few efforts underway to try and build a stronger aussie community in the bay area. Check out www.advance.org and sign up. I'm on the San Francisco committee and specifically thinking about ways to get entrepreneurial-minded Aussies together.