Instead of relying on a single instance of a product making money for years to come, focus more on new games or in-game content sales. Better yet, focus more on positive features and bugfixes/polish for present games than on ways to defeat crackers. Knowing your limitations, try social solutions for social problems. Make your brand the trusted good source for awesome games of your niche.
More elaboration on that last tip: Warez and hacker sites have a deadly mix of people wanting to share things and people wanting to take advantage of sharers. Sure, you can get some game for free, or you can apply some patch that allows you to OPK people in an FPS, but you have to blindly trust whoever submitted that game/patch to have your best interests at heart. You have to ignore how, for example, some people playing the game of Combat Arms unknowingly spam their server chat with advertisements for the hack site. You have to believe that no one would put a backdoor on your system through your game and have access to any account and credit card information you may have stored via that game or on your computer.
In other words, the system is about trust, and if your brand matches or exceeds its customers' expectations, you will earn and maintain their trust and their loyalty. Sure, some people may be cheap, but at the same time, they can be bought with a certain amount of guarantee of security. People are concerned about their things.
Educate people more about these completely real and ongoing dangers -- most people have no idea they are part of a botnet, thanks to a little sneaky thing they thought they could do -- and litigate less. One makes you a hero, and the other paints you as a villain. One makes you an expert, and the other turns away customers.