Also, capitalism isn't inherently emotionless, but being competitive, it rewards people who are. High functioning sociopaths are generally much more likely to succeed in a capitalist state than anyone else, which leads to further exploitation and the basic self interest business model you see in large corporations these days. Why do corporations exploit people? Because the people in charge aren't mentally capable of caring about another other individuals. This generally applies to all money systems, however. Note how the communists and socialists still had money systems and a small group that exploited that. That always comes down to human power structure tendencies. Alpha, or adopted alpha personalities, are just not capable of empathy and always seek power. The only situations in our species, or similar species, in which this doesn't happen is when the dominant alpha personalities are completely removed, and the only people who can then take up leadership are (usually female) empathetic and intelligent individuals that lead to more pro-individual social structures.