I’m looking forward to the new version, thanks for doing all this work and I hope the update goes well :)

I see PMG, I upvote.

Textbooks don’t only get digital releases. If everyone started to pirate it all the time, the author would not make any money at all.

Maybe you should start looking into academic publishing and the amount of money authors get for their work in this field. Spoiler: It’s a laughable fraction of the book prices.