@ Saira : Perhaps you don't know me well. If you don't know i actually own a DDL site, ran it successfully for more than a year (Though i don't manage it anymore) and whatever i have written is based on my personal experience. I have tried all these sharingzone, crowdgravity etc and also have earned fair from these programs, i mean more around $5k-10k in aggregate to date. And actually these are affiliate programs. If you use these same programs on non warez sites, you'll earn much better. Oh i have a non warez site which is all about Usenet, so i promote friendlyduck / crowdgravity there . So yes, i earn far better there.
Actually the point is quality traffic or you can say traffic for money keywords. Google won't send quality traffic for money keywords to warez sites, because these keywords are highly competitive, and actually only these keywords convert the best.

I hope this makes it clear.

I am talking on comparative terms. Non warez sites earn many times more than warez sites.

@DuckBre : Organic traffic for money keywords matter. Once you get, there are many affiliate programs to monetize this traffic. I also earn from affiliate programs.
So the approach is find 'money keywords' , rank for those keywords and then just use any affilaite program as per your niche.