Yes everywhere, by definition. That's the promise of nuclear fusion for instance. Understand what a gradient is? gradient zero. That does not mean that you cant

Yes everywhere, by definition. That's the promise of nuclear fusion for instance. Understand what a gradient is? gradient zero. That does not mean that you cant have local scarcity. Nature is not homogeneous. There will be exchanges still especially commodities. So there will be trading, well it will probably be automated anyway. So on average it is still abundance for the whole system.