Like many successful revolutions, this one might come from the bottom.
John Gruber writes about the iPhone's support for Open standards and the reality of enterprise email that's still predominantly based on proprietary solutions by a handful of companies. 'Revolution' is a strong term for what's at stake here, but It will --- nevertheless --- be interesting to see if this will another case of the people forcing corporations to embrace/promote/develop superior, Open technology. Given the iPhone's appeal to the relevant demographics, I guess it might be easier than previously thought.