I get the feeling that we don't have the right vocabulary for thinking about iphone apps. They're a little more like albums or films then like software.
I have the hardest time convincing my software developer friends that just because I sell people software for $30 doesn't mean my customers expect me to be Best Friends Forever with them for life.
"But you don't have an explicit license term!"
My customers don't even know what that means. They'll use it until they don't feel like using it. Then, they'll stop. Its a fairly cheap consumer good for them, akin to a new toy for the kids, which might have a shelf life in weeks (or days) for the same price point.
This isn't totally a horse of a different color from iPhone apps, except the typical iPhone app is expected to last about as long as a frothy coffee creation from Starbucks.
