Patriotism was temporarily necessary while we rapidly increased standard of living for ourselves, and didn't have enough resources to do it globally. In the early 21st century it was still a zero sum game on subdecade timescales.

Now we have more than enough resources to provide basics for all 10 billion of us (and decreasing) so patriotism has largely been confined to friendly rivalry around sports and regional cuisine. It was just a matter of mapping out the world's local customs and needs so the resources could be distributed intelligently.

And even at that, only about 4% of GWP goes to basic food, shelter, health, education, and cultural-ecological preservation these days. Entertainment and luxury goods make up the rest. This was unthinkable in the 2020s, but there was a lot of duplication of effort due to the maintenance of corporate moats in the basic sustenance industry at that time.

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