Even if a socialist world revolution happened in the near future which it wont re-industrializing the imperial core nations wouldnt even be on the to-do list near term. We would be much harder pressed to shrink the entire global economy down and get climate change under control. Most people would be dedicating their time to subsistence activities. We only have maybe a decade before there are mass crop failures everywhere to a scale we cant deal with currently. They already happen but we make do by hiking up prices and letting the poor go hungry. Eventually everyone will need to tighten their belt. Who is exploiting who wont really be a concern anymore itll be more how to we keep deaths to a minimum and what do we do with the 2 billion or so refugees fleeing uninhabitable zones around the equator.

The imperial cores current (stupid) plan is to just villify immigrants and start killing refugees once it gets bad. Thats not only evil but it wont work. The capitalists all think short term they are idiots who dont know how to plan for a centuries long ecological disaster. We are heading towards a global depopulation event of billions of people due to starvation and dehydration, and before that starts it looks like we are gonna do a little WW3 for funsies. The Imperial core will only partially re-industrialize itself which yes theyll be very exploitative in doing. They wont have time to do it fully. Itll mostly be military stuff, and the basics they start to make at home again. Theyll probably loot small nations to steal their equipment and goods and bring it home to their population during the war too. I don't think the war will end because 1 side wins but because the situation gets so bad with climate change that the imperial core will reassign all its military forces to looting mostly defenceless nations. While countries like Russia, and China will sit at home, and use their militaries to defend themselves and their immediate neighbors.

After that period ends as they use up all the easy targets we will enter into what i call the "Trash Economy" where we are living off the trash of the old economy. Lots of peoples jobs will be to sort trash and recycle it. Even at this point they wont be industrialized again. I think very few nations that exist today will continue in their current form past the next 50 years or so. The ones who survive the famines will reorganize into city-states most likely. The only places that will survive are places that are already preparing to be self sufficient like China, the DPRK, etc.

If somehow a magical world revolution happens tomorrow these challenges dont go away. The imperial core would need massive bailouts from the rest of the world to rebuild their ability to support their own basic needs (Especially Euros. America is actually much better off than Euro Zone nations). But the rest of the world would be too busy preparing to survive whats coming so while i imagine some places could offer help, like China with the BRI, I do not think it would be enough to actually get the imperial core ready, and those nations would mostly collapse. Their populations would flee to other regions or just subsist off the land for a few decades and when the rest of the world got its shit together theyd come help rebuild the regions that collapsed. Which wouldnt just be the Imperial core. A lot of regions will have a complete societal breakdown pretty much no matter what we do at this point.