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How do those systems manage capital-intensive projects? Bridges and dams and airliners and power grids and so on...

>How do those systems manage capital-intensive projects?

The use of the word "capital" here indicates a misunderstanding of the social dynamics of tribal economies.

They produce and consume that which they need together because of shared benefit.

Large scale centralized constructions like the Golden Gate Bridge, the Hoover Dam, or power grids are built to serve the stationary needs of the big city not the small, distributed, mobile tribe.

Such a tribe would either be pre-technological then, or piggybacking on a technological society that did make those investments.

>piggybacking on a technological society that did make those investments.

Indeed, every technological advancement has piggy backed on those before it.

Not the same thing - this tribe can't exist without infrastructure it cannot create or maintain itself. Your caring sharing tribe ain't going to be making a chip foundry or a means of powering it or extracting raw materials for it anytime soon. That needs capital.

What's not the same thing?

Plenty of such tribes exist and have existed without centralized industrial infrastructure.

The parent suggests it as an alternative to what we have now. That's not viable unless we want to regress to pre-agrarian levels.

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