Currently, Yes, No...
iPhone is not going to sell to business users.
No MS Exchange support
No Blackberry support
No viewing and editing of MS Office docs
No real keyboard for heavy email users
...iPhone support for any of the above.
But the initial iPod, I bet, was not dreamed up as a way to exercise (Nike + iPod) or plug into your car's radio or become integrated into the audio system by auto companies during the manufacturing process of said auto, or seen as an educational device at colleges and possibly public schools or the possiblities of medical related uses let alone the morphing of the device into a audio/visual aid with future possiblities and of course just the word's "iPod" and "podcasting" into the lexicon of our language.
No, the initial iPod came out and I ranted about why the heck a computer company is even wasting it's time and resources with this stuff! Glad someone had better vision then I.
Maybe better business support will come along in the future. Maybe not.
The iPhone will sell to young people with alot of disposable income (or rich parents)
I don't think Steve will worry about the young people and I don't think that's his ultimate target. Most kids today have an iPod in one hand and a cell phone in the other, so merging the two products only made sense with regards to that demographic.
But notice the way Steve talked about the iPhone during it's introduction at MacWorld and compared it's functionality or ease of use with regards to all the other smartphones that one typically thinks of when thinking of a smartphone brand to use for business. If Steve's just wanted to target a lot of rich kids with a married device of an iPod/Cell phone he could have demoed it that way.
I think the Rich kids are already considered in the bag. I think, in some form, the business market is on Apple's radar screen. I won't even begin to possibly fathom how Apple will do it, but then again, I poo-pooed the iPod and never dreamed of the software applications of iTunes jukebox or the advent of the iTunes Music store now selling music, ibooks, podcasts, music videos, tv shows, movies...
So I say, let's just wait until the product is out there. Let's just see what finished software apps are on the phone at the time of release and what's in the pipeline and let's visit this discussion again in five years and see where everything stands.
That's my take at least.