It should also be noted that copyright laws usually have all sorts of exceptions for fair use such as satire, education, etc. Typically, keeping and even using a copy without permission is legally allowed under certain circumstances.

With theft the originally owner loses what is stolen, with copyright infringement the owner only loses the license fee for 1 copy.

There used to be an anti-piracy lobby group in Australia literally called "Australian Federation Against Copyright Theft". I always had an issue with their name since they were really against copyright infringement, not "copyright theft" which is just a nonsense term like you said. It's been ruled several times by courts both in Australia and in the USA that it can't be called "theft" (e.g. https://www.techdirt.com/2013/12/02/surprise-mpaa-told-it-cant-use-terms-piracy-theft-stealing-during-hotfile-trial/).

I like to think of it as something similar to watching a football match from the other side of the fence. People who paid the ticket, are loyal fans. People who didn’t pay, but still want to see the match, probably aren’t even part of the target audience. Some of them might be, but that’s a small number.

So, when the football company says that they’ve lost the sales of x number of tickets, they are actually saying that if those people had enough money and if they cared enough, they might have paid this amount of money.

or save page to download all loaded image assets from a page into a nice folder

It’s different when you earn profit from another person’s work.