guys supporting piracy, go pirate open source all you want if you like free so much - i won't say a word. don't use any copyrighted material if you have no desire to pay for it - it is not made for you.
Here you fail to understand how FOSS software works. It is still under copyright. In fact, in many jurisdictions, copyright is automatic and the author is not able to renounce the copyright. In order to grant more freedoms than is traditionsally available under copyright law, the author releases the work under a license giving additional permission. One of the simplests licenses is the
WTFPL.
One important thing to understand about permissive licenses is that if you disregard the license (for whatever reason), copyright law still applies with exemptions such "fair use" in the united states or "fair dealing" in commonwealth countries. IMO, the default copyright license still applies for proprietary software as well, even (especially) if you disregard the EULA. Since FOSS lincenses rely on copyright law,
It is possible to pirate FOSS software. Typically, that involves distributing derivative works without releasing the source code.
On thing to watch out for is that some EULAs appear to be patent, rather than copyright licenses. One example of this is the Windows 7 EULA. It claims you agree to the license "by using the computer." Copyright laws does not have this power, but stronger patent law does. For example independent development is not a defence in patent disputes unless you can prove prior-art. Even if you can prove prior art, you are still liable for damages since granted patents enjoy a presumption of validity. For sufficiently complex software, it is probably trivial to get it to perform some kind of patented series of steps during its operation. In fact software patents are getting so ubiquitous, it is hard to write software avoiding them. To be safe, you would have to restrict yourself to 20 year old techniques.
The "would you copy a car" will be come a big issue in the comming century. The arguments for and against on both sides are exactly the same as for other things under copyright/patents/trademarks/integrated circuit topologies/ or database rights.
Schlock Mercenary explains the end-game.Back to the point:
People are social creatures. It is not enough to use some random peice of software, or watch some unknown movie. Due to network effects, we are generally expected to all use the same (proprietary) software, watch some portion of pop-culture, have a familiarity with the bible since it is referenced so often by other works, etc.
Copyright expires for a reason. As do patents. Trademarks don't expire because they exist for a different purpose: to prevent confusion in the marketplace.
I was serious when I said that ISP restrictions on copying restrict my ability to copy even if I have permission from the copyright holder. If you use certain protocols like bittorrent, you are presumed to be infringing copyright, despite the substantial non-infringing uses. When the ISP imposes bandwidth caps to get you to buy their "tripple play" (Internet, TV, Phone) bundle, it restricts my ability to author alternate Gnu/Lunix distros or participate in the Open Street Map project. Most residential ISPs restrict servers; meaning they are only selling you half an Internet connection (the IP protocol is inherently Peer to Peer). When I was shopping for a webhost, I was dismayed to learn that many of them are even more restrictive than ISPs (often exerting editorial control over your site).
Edit: Added Schlock Mercenary link, other minor corrections.