I wonder if it's possible to get the dev kit, write an app for profit, give Apple 30% and sell it lemonade-stand style? In any case I guess with a dev kit you test out your apps then submit them to the AppStore for approval - if you want users to be able to download them from the net.
Clients would have to jailbreak. There's no distribution/installation mechanism available for your average joe than the iTunes method.
Android apps can come from the Android Market (Google managed) or anywhere else without restrictions. There's only 20k currently available compared to Apple's 100k. But if I was Apple and saw these numbers switching places dramatically I'd consider a more open approach to app distribution. But of
course I would! I'm open-itto

I sort of doubt it. There are already a lot of pr0n shops and such that are creating apps for 'droid and that's where it'd go straight away on the iPhone. Regardless of the notion of "It's MY
weiner iPhone and I can abuse it any way I want" I don't think Apple wants a photo ANYWHERE that has both pr0n and the Apple logo in the same frame. I think that THEY think it's bad enough that the skinsales people have made web apps that run flawlessly in Safari.