The government is a huge customer for closed source proprietary software which incurs an unnecessary expense to taxpayers in software licensing fees. The general philosophy of open source software is that "more heads are better than one" when it comes to developing a logical solution to problem-solving. This philosophy compliments the role of our government which goes something like "for the people by the people"
Why Is This Idea Important?
Using open source software in government and even encouraging its use in schools will save tons of money and will also avoid potential corporate influence on the governmental infrastructure. For example if separate government offices wanted to integrate their systems it could be done without being at the mercy of a huge corporate vendor's prerogative in opening their proprietary formats.