I expect to pay a fair price for things. Unfair pricing are profits made from monopolies which are illegal. Copyrights exist to enforce monopolies, and thus are unethical in my view. It is especially evil when lobbying pushes laws that develop mass surveillance, private militia and automatic justice. While these laws exist, piracy is an act of resistance against oppression.
And it must be mentioned : science should be free. Especially medical science.
What pisses me off with copyrights is that the unethical or outright evil behaviour come from the copyright owners, but they turned the laws so the evil behaviour is legal and we now have these questions about the ethic of so called piracy.