Individuals and many smaller businesses can probably adopt the iPhone despite them, but not larger companies or those for which security is important (such as hospitals, government agencies, and financial services providers) and as such many business organizations will never incorporate the iPhone into their company, the reality of it is, security is still a major concern, they'd have to either employee a completely new tech team just to deal with the problems/concerns employees would have with incorporating the iPhone into their system the list goes on and on..