If that were the case, all games including AAA would be exclusively multiplayer. While there have been some MP-only games (because that's a good strategy to acquire users), that's not been the case. In fact, you can get MP on cracked games through steam by abusing the API.
GabeN was right, it's a service problem. Sure, when I was a teen I would crack all my games, but I had no money and was never going to be a paying costumer. Now that I have money I can spend, and since steam has acquired me as a user, if I want to buy a game I will check steam. I still crack some games because I do not have infinite money, but it's always because I checked the price and decided it was too much first.
GabeN was right, it's a service problem. Sure, when I was a teen I would crack all my games, but I had no money and was never going to be a paying costumer. Now that I have money I can spend, and since steam has acquired me as a user, if I want to buy a game I will check steam. I still crack some games because I do not have infinite money, but it's always because I checked the price and decided it was too much first.