Yes, use of non free software is a risk for business and a surrender of sovereignty for governments, including the US government. The US military, NASA and other agencies are stepping out of the trap. It is only corruption that keeps them using Windows and other non free software. They will happily force it onto others, however,
http://techrights.org/wiki/index.php/Cablegate#Microsoft
http://techrights.org/wiki/index.php/Cablegate#Free.2FLibre_Software.2FStandards