I find it fascinating how local developers began, and I'm thinking of doing some article in the near future about just that (I'll also be doing it in conjunction with how developers came up with their name). But anyway, the recent interview I did with Firemint sparked more interest again when CEO, Rob Murray, said that he was previously at Torus before starting up his own studio.
It seems the origins of numerous local developers were seeded from other established companies, and yeh, this happens a lot in many industries. Another example is id software and all the companies around Dallas that sprouted from ex-id employees. But as far as I know, we have people who moved from and then built:
Torus -> Firemint
Blue Tongue / Melbourne House -> Red Tribe
Auran -> Pandemic
Microforte -> Interzone ?
I know many other Melbourne companies have their roots from Beam / Melbourne House, although I can't recall which ones..
Anyone have more to add to the list?