You must not have been much of an Austrian if you didn't even grasp the basic point that individualism has nothing to do with isolationism. Also, it's a simple correlation-causation fallacy to claim that rainforest tribes are not advancing because they are anarchistic.
I wrote nothing about isolationism. I wrote:
An 'individualist' life is possible within a collectivist, materialist society only. Beyond the collectivist society, within the stateless
community, there is no individualism.
Self-sufficient rainforest tribes are not advancing and producing surpluses within 1 million years, because they are
not forced to produce surpluses (for the church and state mafia). To be forced is the only evident causal reason to produce surpluses. No state = no economy, no business.
Before you jump to conclusions consider the prosperity we enjoy today is a result of the free market functioning despite collective political control (it is failing because of it)
Human and all animals seek pleasure and to avoid pain. Innovation in technology and forms of government are a natural expression of evolutionary history. When there is lack of supply of whatever humans need suffering ensues, the low road is to use brute force to ensure you get, at the expense of others (collectivism is an extension of this principal). The high road is to find a replacement or or to innovate and create a better solution) market forces, price expression as a result of supply and demand is one such meme. Failing to abide by the meme doesn't need collectivism to enforce it, abuse is self extinguished (the goose that laid the golden egg)
Rain forest tribes - for a better metaphor, still live in Eden. They have a well developed system to manage need, they enjoy the full complete of human emotion suffer less depression and expense happens despite our judgments. The problem is they haven't evolved the tools necessary to interact with the barbarous western values.
Those tribes that evolved in close proximity like our ancestors evolved to be a new meme species, and we are on the precipice of revolving again.