I have to defend the devs on this one. While it benefits me to have free apps, since I can't pay for anything, why on Earth would I want that when I can't enjoy the app.
Ever imagined Angry Birds going with draconian in-app purchases? Oh, it's going down that route because of people who refuse to pay.
Back in the day, we paid ~$20 for DS and GBA games we could easily pirate for free. Why? Because I know that the games are good, the devs deserve the cash, and the franchise/IP was in dire straits. (Also, screw the fact that Pal Park wiped pirated Gen III cartridges F---)