Publish your research!

Research is often payed by public money, so the results should be available to the public as well! - This demand is heard a lot and one of the good reasons to publish research software as open source software.
At GPN18 I gave a talk called "Publish your research! - Warum öffentlich finanzierte Forschung nicht veröffentlicht wird" which tries to give an overview why this is not happening. Attention: It's in German.