Seriously? If you honestly need evidence just google IPA and see the thousands and thousands of sites offering cracked IPAs... do you think those people are paying for the apps when they install them? Look through the thousands of Installous threads, or the thousands of Appsync threads, all of which are designed for the sole purpose of not paying for an App. I love how people like you play it like they're so honest and naive to the fact that a large (majority, post a poll and ask if you want) of the population of jailbreakers pirate apps.
You defended the developer charging $20 for MyWi, which means you condone the use, which is stealing from AT&T (arguably committing fraud by misrepresenting your usage as coming from your phone when it's really being used by your computer, a service they specifically allow WITH A FEE that you evade by installing MyWi)...
Do you challenge everything everyone says? Looking through your posts it seems like your sole purpose of posting is to shoot other people down. Rather than play Mr Angel maybe you should evaluate your own doings because your own comments made in this board indicate you're in the group of people I classified as "most\many" ...