[)roi(], capitalism and socialism are both economic systems built around allocating limited resources. All the other points listed about it by Wikipedia are the ways and means we go about doing that. And because you're forcing everything into a two-system world, left v right, capitalism v socialism, you're missing that piracy has nothing to do with either of those economic systems.
So as an example, in the world we currently have limited food available and difficulty distributing it:
- Capitalism says that those who want it the most and are prepared to pay the most will get access to it.
- Communism says that some bureaucrat will decide who gets what food and when.
- Socialism takes some of the food from rich people and gives it to poor people.
- Piracy doesn't have a limited resource that it's working with, so everyone can get as much food as they want. You can all eat like kings.
There has never been an analogy to piracy in the physical world. There has never been a major idealogical war where a third side stood up and said "gosh guys, I see you both fighting over that piece of land, you know we could just duplicate it and you would both have a copy".
The danger we have with piracy is that if everyone just keeps copying all the old content that already exists, and no one pays for new stuff, what incentive is there for new stuff to be made. Using the food analogy, why would anyone go and create a fantastic new delicious dish if he never gets any compensation for the time that he spent originally creating it. We want to solve world hunger, but we still want people to create new stuff, and that's what copyright was originally built to do.... give them a very limited temporary monopoly so they could sell their new stuff for a bit, but it would quickly return to be freely distributed afterwards.
Not because they "own" the idea or content, but we temporarily put restrictions on other people duplicating them to allow them to make money and encourage the creation of new ideas. This is my problem with calling it theft, calling it theft pre-assumes total ownership of ideas, whereas piracy is not following the incentive system.
If you want to claim that there is absolutely ownership on ideas and content itself, then there's all kinds of questions as to why copyright should ever expire, the whole remixing question, Disney using old stories without paying the great-great-great-grandchildren of the original authors, if someone tells you a secret and you then tell someone else... is that theft because you don't have permission from the original "content holder". Ugh.