Imo the most probable scenario is :

• Neocolonialism is rejected by a critical mass of countries
• The west can’t adapt, so they try to reindustrialize by reverting to industrial revolution conditions (which takes an openly neo fascist movement)
• It goes to war with itself or the outside, either inter European, or West vs new anti-colonial block, or US vs Europe
• After that it undergoes a pink wave like South America, not radical enough to break out of misery but still a bit progressive

Can’t speculate further than that