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> You should check out this thing called open source software

Open source actually demonstrates that copyright serves a purpose. There are still customers for non-open software, even when open alternatives exist, so the ability to monetize brings new offerings to the economy.

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Open source software is unique in that it takes little to no capital investment to create. People post free art too. It doesn't mean that Game of Thrones didn't cost anything to produce.
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Writing books and creating music also takes no capital investment
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You should check out this thing called GPL that is the standard license of open source projects like Linux, and heavily depends on copyright laws.

Or are you suggesting open source software is public domain?

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You may want to review your history. The GPL is copyleft -it only exists to subvert copyright law by using it against itself in a sort of intellectual legal judo. If "IP" laws were not as they were, there would be no need for the GPL. Software would be Free.

https://en.wikipedia.org/wiki/Copyleft

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Even if companies didn't have copyright protection on their source code, that doesn't mean they'd post it all on the internet for anybody to freely download.
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You are not a developer so you don't understand you can compile to a binary without revealing your sources?

No copyright -> No GPL -> anyone can release their own close source version of open source software.

Why do you think GPL was create in the first place? We always had public domain you know.

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My compilers work just fine? Perhaps I'm not sure what your point is.
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My point is that you are unable to understand the difference between GPL and public domain.
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