Not the OP, but the only people I've heard of pirating apps are those for whom $20 is the difference between eating and starving (e.g. students whose phone is paid for by family, but their food and apps are not).
A number of people pirating apps are people who don't have the App Store available in their countries, and some others are children and young teenagers who don't have their own money to buy things online (with parents who aren't interested in helping them buy games).