This posting is great and Phillipe Winthrop raises good points…though I believe that the iPhone is ready for the enterprise market, especially as some of these key points, such as email, calenders tasks and their related security are being addressed by Sybase iAnywhere’s Mobile Office product. Check out my earlier blog Securing and Delivering Business data on the iPhone.
Thanks & keep up the good work Phillipe, though I think the answer to your question is currently in the realms of companies other than Apple, such as us at Sybase iAnywhere
Ian