[bbctol]

Well, the government has defended you from foreign threats, protected the monetary system that lets you earn in the first place, provided for your public education, established your infrastructure, and been a check against your home burning down or being robbed. If everyone's entitled to what they've done, what are they entitled to?

Capitalism is a system, like any other, created by humans and not found in nature. "Ownership" is not some property of matter; what it means to own something is that there is a legal system that supports that deed and an armed police and military to enforce it. There is no concept of ownership except for a truly anarchic "everything I own is in a box that I have the key to" idea that does not require other people to guarantee your property rights.