Why didn’t we work together? Maybe we were on different sides of the planet or didn’t enjoy working together for many reasons. The point wasn’t that we weren’t working together. This was a hypothetical scenario to demonstrate that in this specific scenario the excess profits were the result of deploying capital. Even in communist societies part of the output that is generated is not wholly due to labour but due to the allocation of capital by the communist regime. For example in the USSR the mechanization of labour resulted in standard of living increases because labour without capital is of very low value. Capital without labour is also of very low value. A factory without workers would not work very well at all either. It’s the combined utilization of all the factors of production (Total factor productivity) that determines how much income can be generated in the economy. The larger the TFP the higher the wages. Economies with free markets have higher total favor productivity as the individual production decisions are dispersed among many business owners and workers rather than centralized in the hands of a bureaucratic elite.