There are plenty of examples of FLOSS working for government. Paraguay has decided convert its whole IT system to FLOSS in 2012. There are plenty of reasons but lowered costs and independence from M$ are two top ones. The world can make its own IT and does not need the baggage.
Dell Paraguay, in its style, advertises Ubuntu systems but makes them difficult to checkout… Perhaps this move will smarten them up if it means being cut out of government supply.
Perhaps Lenovo will see the light, too.
More governments should set FLOSS as their default OS. I recommend the Debian GNU/Linux distro because it works for people, not against them.