I'm not pushing for a leak or anything so don't read this like I am. I just have some thoughts about the topic of supporting the Developer and how leaking content here fits it.
I see it in many ways like borrowing a book from a friend. Your friend bought the book and is loaning it to you and if you like the book maybe you'll buy the next one. If I borrow a book, or buy a used game or book, the developer/writer doesn't get anything from that, but they did from the initial purchase. The sunk costs of creating the book or game were covered for that copy by the first purchaser. It's also kind of like a demo. You don't usually pay for demos, but you should for a complete game.
I always pay for complete games that I have done a full playthrough of, and some games I like the idea of investing in early, so I've done some steam early access (since it's a onetime investment and I'll get the completed game too) and such but that's rare for me. I'm not well off, I live basically paycheck to paycheck now that I'm doing a job that I love but doesn't pay much, and even an extra twenty bucks (that isn't already earmarked for either my emergency fund or going towards my new computer I'm planning to get) can be hard for me to come by at the end of the month.
Just some of the thoughts I've had while reading other's comments.