Adding new features or maintaining the software will be cheaper since the government could hire anyone to work on it (including the original developers of the application). This reduces the possibilities that the original software developers overcharge the government for adding "must have" features
Using and therefore developing open source software has economic benefits for society as well as being a social good: the benefit of improving the software accrues not just to the people creating the software and the people paying for the software to be created.
The government should use what is more cost-effective within projected lifecycle of sw.
It should allow solutions based on stable *de facto* standard open-source software in its tenders, but let the market regulate, whether they get offered by contractors at competitive short and long-term prices
Many civilian activities are classified, and for good reason. Everyday, thousands of Federal employees are actively involved in supporting military operations around the globe. Diplomatic negotiations require assurances that they cannot access by the world. Police systems assist in sensitive cases.