This was true maybe ten years ago, but even the US government is now moving away from Blackberry:

http://www.techweekeurope.co.uk/news/rim-suffers-fresh-blow-...

"Research In Motion (RIM) has suffered yet another setback as the General Services Administration (GSA), the US government’s main procurement agency, announced its decision to provide iPhones and Android devices to its employees.

Though BlackBerrys will still be available from the agency, the announcement represents a general shift away from reliance on RIM products and a move towards a bring-your-own-device (BYOD) strategy."