I will start with a story about me being at the age of 8-9. We all had Playstation 1 those times and of course our parents had it cracked so they can buy us CDs cheaper.
But what all these have to do with sales ? I will get to the point in a minute. That year the 1st Personal Computers came out with CDPlayers and CDRecorders. My father did bought one and then i thought i can use it to copy some CDs that i already have and sell them to my friends so i can buy more games and play more. After 1-2 sales and with the money i got my motivation changed asap. I wanted to sell games so i can buy and sell more games. I didnt care anymore about playing that much than selling.