Here's a table I adapted from Louis Rossman's video on the levels of piracy, grey areas and his morals and ethics on it. (spreadsheet file)
I tried to condense each rank and make it less about a specific type of media like CD audio or DVD video, along with a table of simplified characteristics of each situation. Of course more levels can be added and there are many situations not covered. This hierarchy is simply the way Louis ordered it from more to less justifiable; he respects people can think about it differently and I do too. He suggests that he doesn't really care about people that pirate without giving a shit about creators, and that he only has a problem with people who aren't honest with themselves about their motivations.
Setting legality aside, what 'level of piracy' is morally or ethically acceptable to you?
Copying is not theft. It does not remove the original.
If I send you a PDF copy of a book that I own, that I scanned into a PDF myself; that is not theft, that is ownership. So long as I make you pay nothing for that copy; and I do mean $0.00, I cannot charge you for any costs incurred while making that copy; I am not breaking the law until a judge summons me before them and tells me I am abusing my rights and are summarily breaking the law in another manner as is judge's right to do.
I own the physical book and I am allowed to enjoy it in any manner I see fit...including loaning the book to you physically or digitally in perpetuity.
The law supports and recognizes fair use and ownership. It is up to us not to abuse that ownership. I do not recommend making 1,000,000,000 copies of a book and giving them away just because you are mad at the author. That's an asshole move and likely to get the metaphorical judge I described involved in the matter.
Similarly; it is an asshole move for a content creator to sell you a copy of a book or some other media and then go about trying to tell you how you may or may not enjoy the material you just purchased. They can recommend ways to enjoy it; but they do not have an enforceable right, even through contracts, to tell you that you cannot exercise your ownership rights in a certain way...unless you overdo it to asshole levels and a judge and/or the police get involved.