I work for a Government Agency that uses ArcGIS for that last 10 or so years. Personally I'm a Linux user and try to use and contribute to open source projects (although lately I haven't been able to). I also use QGIS but find it's not always what I want when it comes to the cartography part of GIS. The maps it produces never seem to be as nice as ArcGIS. Sorry got a little off topic here. What I'm saying is that even though I like and use open source, my bosses don't give a rats ass about it. If you even mention no licensing fees then they think its an inferior product. They have drank the kool-aid, so we pay tens of thousands for licensing of all kinds of products that have the same or better open source alternatives.
I believe this is also how many other agency view things. They don't care about open source. They just want someone to SELL them what they need.