Most of the software that I have seen implemented in government organizations is COTS(Commercial off the shelf) software. Governments prefer it because they can

Most of the software that I have seen implemented in government organizations is COTS(Commercial off the shelf) software. Governments prefer it because they can usually get multiple vendors to bid on it and can also get SLA. A big problem with implementing custom software is that maintenance of that software would only be done by the organization that wrote it.