Unlikely. It will add to the sales of the iPod/iPhone platform.

They'll sell like hotcakes, and if the iPhone OS ever gets multitasking, it will become a mainstream tool.

I think the real problem with the iPhone platform is that it's been much more successful then even Apple anticipated. It started as a mobile phone OS, and now it's turning into something very different. Had they been able to foresee it being this popular I think they would have put more forethought into application development.