Probably should have made the game longer, and with more replay value then...
Edit - this guy also falls into the same category as those who claim that if people didn't pirate, they would have purchased everythign that they did pirate. For every game bought 2nd hand, there must have been a person who sold it. The person who sold it thus has more money to spend on other games. If you stop the sale of 2nd hand games, then you effectively raise the price of new games, thus lowering sales.
Additionally, if game retailers couldn't sell 2nd hand games, then they would have to raise their margin on new games in order to stay in business, further raising the price of games (or lowering margins for devs) and thus lowering sales.
The truth is generally not as simple as those with vested interests make it out to be.
