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More likely it will lose superpower status and just become a run-of-the-mill large size developed country like Britain or Germany.
Living in a run-of-the-mill developed country isn’t actually bad - in fact the best places to live in the World in terms of median quality of life are all pretty run-of-the-mill places.
Granted, judging by what I saw living in Britain, the whole post-Imperial hangover does screw things up significantly for a century or two compared to similar countries that were never top dog.
The Axis of Evil Fascists.