I've always felt that the big arguments stacking Capitalism and Communism seem to revolve around the practical results of distributed vs centralized allocation

I've always felt that the big arguments stacking Capitalism and Communism seem to revolve around the practical results of distributed vs centralized allocation of resources - and yet that seems to be a feature that is mostly tangential to both economic theories. Yes, many centrally planned Communist economies failed, but we seem to be approaching a centralization by concentration in the US - where we can't get broad public goods agreed upon (even though private healthcare e.g. has been a clear economic inefficiency compared to public). It's a big economic disconnect akin to the disconnect of factory workers in Communist-centralized factories not being motivated or allowed to improve the output. Wouldn't it be ironic if all the energy directed to arguing Communism vs Capitalism had completely missed the fundamental principles on both sides?