People do this anyway. Not creating PDFs isn't even really slowing the black market down.
Obvious reasons they would want to avoid creating PDFs if they could anyway.
A lot of people would download them thinking "I'll just see if its worth buying" or "its not out yet and I'm too curious" or "I don't want to pay $50 shipping to get a book to Australia"
Exactly. I'm sure there's shady pdf's of every SWRPG book floating around somewhere, so I don't see why FFG can release an official one. I for one enjoy reading through the actual hardcovers, but during sessions it's just so much easier to ctrl+f something in a pdf.
Because they signed an agreement and are legally liable for sticking with it. Just because others are violating Copyright and Trademark laws by making and distributing copies doesn't mean that FFG can just ignore an agreement they have with someone, else they risk forfeiting the agreement and can't produce anything.