When I left FSA, COTS was a big thing (commercial off the shelf software). I assume it's still a big thing.
GovExec has a piece on the UK experience in trying to rationalize government purchases of COTS. (I remember in the early 1990's when they tried to standardize ASCS on Wordperfect, Paradox, and Lotus 1-2-3. )
Why shouldn't the government save billions by standardizing on Libreoffice?