It was shocking for me when I first encountered people who make $200K+ and didn't know where all the money went. I too presumed that being "savvy" was somehow linked with high income. I now know it is not that tight a binding.
Going back to iOS devices, they provide a simple filter. People who buy them pay more, and they are therefore likely to pay more again. It really says nothing about their income or credit card balance. It is purely about spending habits.
Eh, I don't really think that's a fair conclusion. Or, at least, you've managed to phrase it in an insulting way. Yes, if I have more discretionary income, I'm probably more likely to purchase more apps. This isn't a bad thing, necessarily: It's just how it works. As an app developer, I'd much prefer to target people who can afford my product.
