> The allowance for copyright law to exist in the USA is "To promote the Progress of Science and useful Arts"; with a similar intent to patents to eventually bring more quality things into the public domain. So yes, anything outside of that, regardless of invention of non-science/useful-arts, and regardless of profitability, is fair game.
Can you give an example of what is outside of science and arts that you think is fair game?
Can you give an example of what is outside of science and arts that you think is fair game?