I have no reluctance to travel abroad for work at all. There's tons of places elsewhere in the world I'd love to work. But when the jobs you want are in America (or at least in greater density or number than elsewhere) why would you leave America?
I'm not sure why you were voted down as I don't see anything wrong with your point. My brother lives in Mountain View, works in biotech and has long said that the scene in Australia just hasn't got the critical mass it has there.
But the number of available jobs is the issue here and I wasn't so much referring to established professionals as those who are just starting out and having a very tough time finding their first gig in the current US economy.
In Australia and NZ, the option to look abroad for work is on pretty much every graduate's list that I've met and I guess it's understandable due to our population sizes. I got my first development job in the UK and it was that critical "foot in the door" that I needed to get work when I came back home.
