Why does it have to be a single economic system? The answer isn’t an existing economic system because economic systems are broken from the jump. The answer is a constantly evolving system, moving toward the betterment of all, not the betterment of the few. Capitalism may have been the economic system for the Industrial Revolution/subsequent time—I think that’s up for debate, but any pro capitalist will tell you it’s great for innovation (which, nah, but sure let them have it). But after the period in which capitalism helped people progress, its time was over. We should have moved past it to keep it from getting corrupted. But we haven’t and look where we are now