Arm ends?

Here, it’s not demand vs. suply. It’s demand only, that drives prices.

Wait, isn’t that a sign for collusion?

About the PDF chapter: you (and the publishers) use it wrong. PDF was never intended for processing, only for representation; think of it as a digital print. Scientific stuff should be published in an e-book format instead.

it’s incredibly impractical to persecute those accessing them.

Always was. If you’re serious, persecute those hosting it.