Now thats an interesting question, how would someone prove they lost x amount of money because of leaks...
Like someones pics are posted on a thread of someone else, but I dont find said person appealing so I wouldn't have brought it or paid attention to pics that are leaked. So in sense, thats not a loss of money because I was never going to pay or view the content in the first place. And for example maybe 40% of people who viewed the page felt the same.
Ooh this is interesting imma have to research that. I would assume it would be very hard to prove such a thing without throwing out a huge number and going into action for the amount which could be completely false in the first place.