Even though each one of these customers is only sharing copies with 3 persons, the number of illegal copies and lost profits grow rapidly as the time passes due to the viral factor involved. Supposing that you're selling a digital product priced at $47, and that every person the product is shared with, also shares the product with another 3 persons within one month, below is a simple table that proves my point: Amount of illegal copies Month Lost profits 10 (original customers) x 3 copies shared by each one = 30 people that now have illegal copies of your product 1 ($47 x 30 copies) = $1,410 30 people with llegal copies x 3 copies made by each one = 90 people with illegal copies 2 ($47 x 90 copies) = $4,230 90 people x 3 copies = 270 copies 3 $12,690 270 people x 3 copies = 810 copie...