There’s also a “I’m not going to get some bullshit masquerading as the movie I was looking for.” thing in place.
I belong to a couple private trackers. I use them nearly exclusively and have never once downloaded a bullshit file/virus/whatever. It’s happened a couple times on public ones.
I know who the good uploaders are and know that seeding on the private isn’t going to get me flagged to my ISP, which happened twice before going off public.
I guess what I’m wondering is: why wouldn’t you use one if you can find what you’re looking for?
You know what reduces copyright infringement? Making content available, affordable and accessible.
In the golden days of Netflix, I hardly torrented anything.