Pure Capitalism: Your on your own
Socialism: We help each other when we are down and we all start in the same place, where we end up is entirely up to our ability and hard work
Communism: We all have the same and no one has more
Our system is a hybrid socialist/capitalistic system. Even from the beginning the founders recognized the need for government to control certain things like roads. We later recognized the importance of education in order to compete with other countries and have mandated that all citizens get an education and we socialized education.
It isn't about capitalism or socialism but of where each is most applicable and beneficial in our system.