I don't consider "internet piracy" as stealing because it is copying. In an age where it is easy for anyone to copy then the expectation to have a temporary monopoly on distribution, as if it were a physical good, is unintelligible.

The point is "voluntarily" is more nuanced than merely people agreeing to it. I consider people free to choose when Spotify would get laughed at every single time. Instead it's sometimes an offer you can't refuse, either out of desperation or because they are ignorant of how they are being exploited.