Don't get caught in a philosophical trap with a bunch of academic mumbo jumbo. Capitalism is better than socialism for one simple reason: abundance. That is, you can buy more stuff and you can buy better stuff. In socialist countries, there is only one type of bread and one type of wine. In capitalist countries, you can choose between may types of bread and many varieties of wine. In socialist countries, goods are designed to serve one utilitarian purpose and are not designed to be enjoyed. In capitalist countries, goods are designed to be enjoyable in addition to serving a purpose. Take hotels and cars for example. In a socialist country, a hotel is nothing more than a room to sleep in. In a capitalist country, hotels are more than just a room to sleep in, there is also room service, pools, exercise equipment, and hospitality. In a socialist country, cars come in only one model and two colors, and it has nothing more than what you strictly need to drive. In a capitalist country, there are many models and colors of cars and they come with seat warmers, air conditioning, and Bluetooth speakers.

That is the straightforward and piratical reason capitalism is better of socialism stripped of all the academic and philosophical talk.