Steve reinvents the wheel.....square
@bws - you "don't see BlackBerry supporting anything else other than its own service". Seeing that BlackBerry works with POP3 and IMAP in the consumer space and Exchange, Domino and GroupWise in the enterprise space you clearly have no clue what you're talking about.
The fact remains that, even if iPhone could do everything BlackBerry does as simply as BlackBerry does, it's still a massively expensive device with equally insane tariffing and network restrictions. If you're a business rolling out mobile email to 100, 200, 1000 users are you really going to purchase shiny expensive iPhones for them or functional cost effective BlackBerrys? Apple has a long long way to go to compete with the industry standard.