No idea why people want to pay money to be scammed by these media companies who see you as a number in a spreadsheet and nothing more.
The point is that one side can "legally" do that the other can not (in most countries). It's really not about the technical side of it, but the legal one.
If this was a genuine mistake on Sony's part, and not intentional deception maybe it is more a civil product liability matter (as long as they refund customers) rather than a criminal one.
Disclaimer: IANAL, not legal advice.
This term was coopted by the MAFIAA because literal descriptions such as file sharing or unauthorized copying are not objectionable to the general public who see them as minor / insignificant and thus are not sensational enough to draw the outrage needed to enact disproportionate criminal penalties(3) and thus preserve their monopolistic(2) profits.
1 - https://en.wikipedia.org/wiki/Piracy
2 - By way of ridiculously long copyright terms or distribution oligopolies / monopolies
3 - See 'conspiracy to commit' charges carrying de-facto life in prison penalties
Source: OED [1],
2. fig. The appropriation and reproduction of an invention or work of another for one's own profit, without authority; infringement of the rights conferred by a patent or copyright.
1771 Luckombe Hist. Print. 76 They..would suffer by this act of piracy, since it was likely to prove a very bad edition.
[1] https://archive.org/details/the-oxford-english-dictionary-19...
The word "piracy" is only applicable to sketchy businesses who profit off someone else's work without permission.