Why is it beneficial?
A governmental system in which people can own their own businesses for profit. In this system the government doesn't own you or your property you have your things and your neighbor has theirs. "every man for themselves."
Benefits of capitalism
Economic freedom overall equals out to political freedom. This also creates pride and confidence due to being able to say i did that and this is my reward. A capitalist county is built on rewards, and you get this if you do this other thing.